UV Tools 3.2f

Name: UV Tools 3.2f
SKU: 15823
Price: 20 USD
Availability: InStock

$20

Easy to use Unwrap tools for Archviz, Gamedev and more.

Script requirements:

3dsMax 2013-2021

If you liked this script or want to suggest some cool feature please leave comments on scriptspot.

Tweak

Move and Rotate texture in 3dsMax viewport.

Align

Align U or V axis to edge end or center.

Transform

Move, Scale, Rotate UV by values.

Orient

Rotate texture by element length.

Pick scale

Get UV scale from another polygon.

Scale in units

Rescale UV to any units value or to Real-world mapping.

Randomize

Random UV Flip, Rotate, Offset, Scale.

Checker

Use 4 preinstalled checker textures or add your own textures.

Real-world mapping supported.

Original materials can be restored even after 3dsMax crash.

Relax

Relax polygons in viewport.

Normalize

Equalize texel density to min, max or average.

Show bitmaps

Show bitmaps on selected objects or selected polygons.

Scale to bitmap

Rescale mapping in aspect ratio of bitmap texture.

UV Morpher

Create flat object from mapping.

Can be used for Skin Wrap retopology and other techniques.

Transfer

Transfer sub-selection from Unwrap to Editable Poly and vice versa.

Hide elements

Hide selected polygons to get access to occluded areas.

UV operations

Many useful UV operations.

Learn more in Help section.

Customize GUI

Automatically change icons according to 3dsMax colors.

Close unwanted rollouts and change their order (2017+).

Actions

Assign any UV Tools action to hotkey or toolbar button.

Combine actions to create complex one-click mapping operations.

AND MORE

Installation

Drag “UVTools.mzp” to 3dsMax viewport
Click Install
Go to: Customize > Customize User Interface > Toolbars > Category “Nik Scripts – UV Tools”
Add “Open UV Tools UI” button to toolbar

For UV Tools 2.x users

You don’t need to uninstall UV Tools 2, installer will delete all old files.

But you need to delete UV Tools 2 toolbar button manually. UV Tools 3 button should be added from “Nik Scripts – UV Tools” Category only.

ChangeLog

[3.2f] – 2021.02

New. Planar mapping by element. It will keep existing uv shells and seams.
New. Orient elements to longest side new algorithm. Now it will find best rotation angle automatically.
New. Collapse whole stack if no modifiers are selected.
Improved. Planar mapping “Weighted normals” option.
Improved. Bitmap to UV new method without Unwrap. A lot faster, no memory leak.
Fix. Collapse points by distance memory leak.
Fix. Interactive scale memory leak caused by unwrap bug.

[3.2e] – 2021.01

New. Bitmap to UV. Transfer bitmap transformations to UV (tiling, offset, rotation).
New. Collapse to Poly can now be disabled in settings.
New. UnwrapPro support for Transfer selection to new modifier.
Improved. Rw to Tiling. Bitmaps offset and rotation support.
Improved. Planar Mapping now using weighted normals calculation.
Fix. Unwrap bug when relax was cancelled by Esc and next relax run with 1 iteration only.

[3.2d] – 2020.12

New. Grow selection to smooth surfaces. Select by Smooth Groups moved to Shift+Click.
New. Planar Mapping grow to element (Ctrl+Click).
New. Planar Mapping in World coords (Shift+Click).
Improved. Transfer edges between UV and Poly is much faster.
Fix. Planar Mapping bad alignment in some cases.
Fix. Select by Smooth Groups if no Smooth Group assigned.
Fix. Scale to size from wrong center point in some cases.

[3.2c] – 2020.11

New. Set Map Channel and reset UV (Alt+Click). Similar to Abandon mode.
New. Tweak and Align select Unwrap Group.
New. UV Editor auto Zoom Extents Selected. Optional.
Fix. Break by ID incorrect offset order.
Fix. 3dsMax 2017 icons background color.
Fix. Subrollout height bug on some systems.
Fix. Spread (Shuffle) macros was broken.
Fix. Ctrl+Click Planar bitmap error.

[3.2b] – 2020.11

Improved. Switch to previous modifier after Delete or Collapse.
Fix. Convert RW > Tiling fitting to tile.
Fix. Subobject Level buttons state bug.
Fix. Subrollouts height bug.

[3.2a] – 2020.10

Fix. 3dsMax 2021 Rollouts bug if taskbar is on top.
Fix. 3dsMax 2018 icons background color.
Fix. Bad icons when Windows UI Scaling enabled.

[3.2] – 2020.10

New. 2 customizable Tabs in GUI.
New. Checker automatic guess size from object material maps.
New. More map classes support for Show maps in viewport .
New. Distribute elements evenly.
New. Sort elements by Height/Width.
New. Randomly spread elements in multiple stacks.
New. Flip to Left/Right and Up/Down (Shift+Click).
New. Scale uniformly by texture aspect ratio. Planar bitmap mapping was removed.
New. Weld (Collapse) uv vertices by distance threshold.
New. Convert real-world mapping to regular tiling.
New. Pack choose default method (Non-Convex added in 3dsMax 2017+).
New. Close UV Editor (Right Click).
New. Open UV Editor with Filter Selection (Ctrl+Click).
Improved. Planar mapping better alignment (similar to UVW Map – Normal Align).
Improved. Show/Hide maps in viewport speedup.
Improved. Tweaker/Aligner better mouse hit detection.
Improved. UV Smooth speedup.
Improved. Invert Rotate 90 can now be disabled.
Improved. Rename Unwrap to “UV Tools Unwrap” can now be disabled.
Fix. Save Unwrap Setup error.
Fix. Issues with Undo in some functions.
Fix. UV Editor selection flickering when nothing is selected.
Fix. Pick Morpher error.

[3.1.9] – 2020.08

Improved. Dialogs opened by Right Click can be closed by second Right Click.
Improved. Main UI toolbar button checked state. Uncheck to close UI.
Improved. Transfer edges uv > poly speedup.
Fix. Morpher Cut error.
Fix. Align U/V selection bug. Other functions now work while Align.

[3.1.8] – 2020.07

New. Break and offset each material ID (MultiTile by ID).
New. Select objects by materials from selected objects. Fast and accurate.
New. Stitch automatic flip inverted cluster.
New. Temporary Show/Hide UV Tools UI. Right Click on Settings button.
Fix. Better objects validation. Checker on proxies now works.
Fix. Break by material ID didn’t work if ID was changed below Unwrap.
Fix. Transfer. Occasional “Selection is empty” error.
Fix. Edges align undo broken.
Fix. Removed “Select Hard” button. EditablePoly has Right Click on Hard button.

[3.1.7] – 2020.06 (Restart 3dsMax after update)

New. All tools now work while Tweak and Align on last tweaked element.
New. Add Unwrap automatically for most functions.
New. Shrink to Element. Remove partially selected elements from selection.
New. Add Pelt seams. Shift+Click.
Improved. Unwrap added to subselection now supported.
Improved. Interactive scale average uv size in statusbar.
Improved. Align As Group for all sublevels.
Improved. Code optimization. Speedup 200-800% in some cases.
Improved. Interactive scale now have min and max limits.
Improved. Added “UVTools_” to macroses names. Now it’s easier to find them.
Fix. Tweak and Align rare selection bug in max <2017.
Fix. Missing Manage State Sets on some systems.
Fix. Pelt seams select on multiple objects.
Fix. Select longest edges on multiple objects.

[3.1.6] – 2020.04

New. Stack similar elements outside tile. Mainly for texure baking.
Fix. Morpher repack if something was selected.

[3.1.5] – 2020.03

New. 3ds Max 2021 support.

[3.1.4] – 2020.03

Improved. Transfer edges progressbar.
Improved. Added “growselection” argument in Randomize Macros.
Fix. Rare EditPoly errors.
Fix. Transfer edges bug.

[3.1.3] – 2020.03

Improved. Stack similar to first selected element.

[3.1.2] – 2020.03 (Restart 3dsMax after update)

New. Select similar uv elements based on topology.
New. Stack and Group similar uv elements.
New. Easy transfer subselection.
New. Random select uv elements.
New. Unwrap Pro plugin support.
New. Dialog auto height option.
Improved. Bitmap show/hide separate macroses.
Improved. Speed increased in cases with huge elements count.
Improved. Pack if selection is empty.
Improved. Morpher faster repack.
Fix. Editable Patch errors. Still not supported.
Fix. Checker on spline subselection error.
Fix. Rotate by edge. Incorrect angle in some cases.

[3.1.1] – 2020.02

New. QuickPeel button.
Improved. Morpher Cut boolean errors handling.
Improved. Morpher Cut and Skin Wrap better distance calculation.
Improved. Planar mapping from bitmap moved to Ctrl+Click Planar bitmap.
Fix. Morpher Cut. Morpher value 100 removed.
Fix. Flatten and Normal mapping size in Macroses.

[3.1] – 2020.02

New. Packing. Default Unwrap pack methods are used.
New. Move Right, Left, Top, Bottom. U, V buttons in Transform.
New. QuickPeel action Macros.
Fix. Checker on group error introduced in 3.0.9.

[3.0.9] – 2020.01

New. Morhper – Multiple objects support.
New. Morhper – Channel 1 value spinner.
New. Morhper – Show morpher and original objects as box switch.
New. Morhper – Add Skin Wrap to selected objects with nearest morphers.
New. Morhper – Cut selected objects by nearest morphers border.
Fix. Tweak Alt rotate undo.

[3.0.8] – 2019.12

New. Textures Rollout. Size to Tiling.
New. Flatten, Box and Planar mapping add Unwrap modifier automatically.
New. UV Morpher create Morpher from selected polygons.
New. UV Morpher auto open edges fast fix.
New. Restore Map Channel 1 in Settings.
Fix. Edges selection after Pelt seams selection.
Fix. Linked objects Collapse error.

[3.0.7] – 2019.11

New. Break by Material ID.
New. Flatten by Material ID.
New. Flatten by Smoothing Group.
New. Select EditablePoly and EditPoly hard edges.
New. Interactive Uniform Scale uv size message at 3dsMax bottom.
Fix. Show/hide bitmaps error on some 3dsMax localizations.
Fix. UV Morpher Fix opened edges error.
Fix. Flatten and Normal mapping size after Pick Size.

[3.0.6] – 2019.10

New. Scale from point. Right Click: Setup scale point.
New. Transform Scale and Rotate from Zero.
Fix. Tweaker and Aligner undo bug.
Fix. Pick scale wrong face selection.
Fix. Align to edge center wrong position.

[3.0.5] – 2019.10

Fix. Pelt seams errors in 3dsMax 2018+.

[3.0.4] – 2019.10 (Restart 3dsMax after update)

New. Pelt seams select.
New. Pelt seams replace.
New. Pelt seams clear.
New. Improved Stitch with auto scale elements.
Fix. Auto Lock 3dsMax UI.
Fix. Critical bug in 3dsMax 2014 Design, maybe some other versions too. 3dsMax restart is necessary.

[3.0.3] – 2019.10

Fix. Wrong Unwrap default setup.

[3.0.2] – 2019.10

Fix. Autostart bug.

[3.0.1] – 2019.10

New. Show bitmaps work on objects with checker.
New. Settings – Save Unwrap modifier setup.
Fix. Critical loader bug on some systems.

[3.0] – 2019.10

Initial 3.0 Release
Chages since 2.x:
- All functions work with multiple objects with same Unwrap
- Speedup 400-2000% in different scenarios
- 99% functions rewritten from scratch
- Macroses
- Tweak and Align in viewport
- UV channel selector
- Stitch
- Size add/substract by step
- Flatten and normal mapping setup
- Planar mapping in real size
- Planar mapping in bitmap aspect ratio
- Pick UV size from another polygon
- Rotate 90 and Flip by Element
- Orient Elements by lenght
- Hide geometry polygons in Unwrap
- Change rollouts order for 2017+

[2.x] – 2017

Obsolete

	Open UV Tools Settings dialog. Right Click: Hide/Show Main UI.
Add	Add Unwrap modifier to selected objects. Map Channel from dropdown will be used. If Unwrap Pro plugin is installed then UnwrapPro will be added instead of Unwrap. Ctrl+Click: Clone any current modifier. Right Click: Find first Unwrap modifier.
MAP CHANNEL	Set Unwrap Map Channel. Ctrl+Click: Add Unwrap with selected Map Channel.
Collapse	Collapse to any current modifier. Ctrl+Click: Reset Xform selected objects. Right Click: Delete any current modifier.
Tweak	Tweak mapping in viewport. Shift+Drag: Move with axis snap. Ctrl+Drag: Rotate. Angle step can be set in UV Tools settings. Alt+Click: Rotate +90 (clockwise). Alt+Ctrl+Click: Rotate -90 (counterclockwise).
	Align U axis to edge end. Ctrl+Click: Align to edge center. Alt+Click: Align + reverse.
	Align V axis to edge end. Ctrl+Click: Align to edge center. Alt+Click: Align + reverse.
Editor	Open Unwrap UV Editor. Ctrl+Click: Open UV Editor with Filter Selected enabled. Right Click: Close UV Editor.
	Vertex SubObject level. Ctrl+Click: Convert current Unwrap selection to Vertices.
	Edge SubObject level. Shift+Click: Select outline Edges from current Unwrap selection. Ctrl+Click: Convert current Unwrap selection to Edges.
	Polygon SubObject level. Ctrl+Click: Convert current Unwrap selection to Polygons.
	Grow selection to UV element (shell / island). Ctrl+Click: Grow to geometry elements. Right Click: Shrink to fully selected elements.
	Select UV borders (open edges). Ctrl+Click: Grow selected edges to UV borders. Right Click: Select longest opened edges.
	Select Peel seams. Ctrl+Click: Replace Peel seams with current selection. Shift+Click: Add Peel seams to existing seams. Right Click: Clear all or selected Peel seams.
	Loop selection. Ctrl+Click: Grow Loop. Right Click: Shrink Loop.
	Ring selection. Ctrl+Click: Grow Ring. Right Click: Shrink Ring.
	Break selection. Shift+Click: Break by Material ID. Ctrl+Click: Break loop of Unwrap selection. Right Click: Setup break by Material ID. Offset by Material ID: If enabled then each ID will be offset by U and V to create MultiTile. Columns: Number of offsets by U axis (columns in MultiTile).
	Stitch selection. If 2 elements are selected then small element will be scaled to large. Ctrl+Click: Stitch 2 elements. Right Click: Weld shared selection.
	Select by Material ID. Ctrl+Click: Select polygons with same ID on all Unwrap objects.
	Select by Smooth Groups. Polygons with any matched Smooth Group will be selected. Ctrl+Click: Select by exact same Smooth Groups.
	Assign checker material. 4 textures included. You can add or replace textures. Original materials are stored on objects in scene and can be restored safely any time. Ctrl+Click: Select any texture file to use it as checker. Right Click: Restore objects materials.
	Enable checker self illumination. This will reveal shaded parts of object.
	Enable checker real-world size.
TILE	Checker map tiling or Checker map real-world size. Depends on checker real-world option.
	Show material bitmaps in viewport. Switch selected objects bitmaps in order 1>2>3>1>... If polygons are selected, then get bitmaps of selected material IDs only. Right Click: Hide all bitmaps of selected objects.
	Select objects that share any materials with selected objects. Ctrl + Click: Select objects that have exact same materials as selected objects.
	Backface cull On. Right Click: Backface cull Off.
	Display material On. Switch display object materials and wireframe color. Right Click: Display material Off.
Main Extra	Open Main or Extra tools tab. Tabs content is customizable in Settings. Right Click: Close/Open all rollouts in Tab.

Rw	Real-world UV size mode.
UV SIZE	UV square size. If real-world mode is enabled then spinner will be inactive. UV size defines size of square in mapping procedures. For example: 500mm means mapping 500x500mm relative to geometry.
+ -	Add UV size by step. Default step is 500 units. If UV size was 330mm and you click + then UV size change to 500mm, then 1000mm, 1500mm etc. Step can be adjusted in UV Tools Settings. Right Click: Substract size by step.
	Apply Flatten mapping with custom settings. Shift+Click: Flatten By Material ID. Ctrl+Click: Flatten By Smooth Group. Right Click: Open Flatten mapping settings. Resize: Resize UV after mapping. UV Size spinner value will be used.
	Apply Normal mapping with custom settings. Default mapping mode is Box. Right Click: Open Normal mapping settings. Resize: Resize UV after mapping.
	Apply Planar mapping in UV size. Mapping will be aligned to surface similar to UVW Map Normal Align. Ctrl+Click: Apply Planar mapping for each UV element individually. All UV seams will be intact. Shift+Click: Use world coorditates instead of local. Right Click: Open Planar mapping settings. Weighted normals: Use weighted normals calculation. Large polygons affect normal direction more than small polygons.
	Apply Quick Peel mapping. Ctrl+Click: Reset before Peel. Right Click: Open Peel mapping settings. Resize: Resize UV after mapping.
	Pick UV size from object and rescale mapping. UV size is taken from picked polygon, and not from whole object. Ctrl+Click: Scale By element. Shift+Click: Scale selected UV to chosen bitmap aspect ratio (proportions). Right Click: Get selected faces UV size.
	Scale to UV size. Shift+Click: Scale from point. Ctrl+Click: Scale By element. Right Click: Setup scale point. Point that UV will be scaled from.
	Normalize elements. Make texel density of elements the same. Shift+Click: Normalize by maximum. Ctrl+Click: Normalize by minimum.
	Make elements height the same. Shift+Click: Match by maximum. Ctrl+Click: Match by minimum. Right Click: Match but ignore aspect ratio.
	Make elements width the same. Shift+Click: Match by maximum. Ctrl+Click: Match by minimum. Right Click: Match but ignore aspect ratio.
	Fit elements to texture tile. Shift+Click: Fit to minimal side. Fill mode. Ctrl+Click: Fit by element. Right Click: Fit but ignore aspect ratio.
	Center elements to texture tile. Ctrl+Click: Center by element.
	Relax Unwrap selection. Ctrl+Click: Keep UV size. Restore previous UV size after relax. Right Click: Open Relax settings.
	Rotate UV +90°. If Invert Rotate in Settings is enabled then UV will be rotated to -90 degrees (texture in viewport will rotate to +90 degrees). Ctrl+Click: Rotate by element.
	Rotate UV -90°. If Invert Rotate in Settings is enabled then UV will be rotated to +90 degrees (texture in viewport will rotate to -90 degrees). Ctrl+Click: Rotate by element.
	Flip Horizontally. Shift+Left Click: Flip to Left. Use left border as mirror axis. Shift+Right Click: Flip to Right. Use right border as mirror axis. Ctrl+Click: Flip by element.
	Flip Vertically. Shift+Left Click: Flip Up. Use top border as mirror axis. Shift+Right Click: Flip Down. Use bottom border as mirror axis. Ctrl+Click: Flip by element.
	Orient elements horizontally based on their length. Shift+Click: Orient vertically.
	Rotate elements by selected edges with automatic orientation. If edge is more horizontal then vertical then element will be aligned horizontally. Shift+Click: Force rotate to Vertical. Ctrl+Click: Force rotate to Horizontal.
	Collapse selected UV vertices by distance between them. Vertices just moved to one position without actual welding. Right Click: Get maximum distance between selected vertices and put value to Distance Threshold spinner.

	Pack inside texture Tile. Right Click: Pack Setup. Type: Linear, Recursive or Non-Convex pack method. Spacing: Space between elements. Rescale: Normalize elements. Make texel density of elements the same. Fill Holes: Fill holes with smaller elements.
	Pack Together (without scaling UV to texture Tile). Right Click: Pack Setup. Same as Pack in Tile.
	Distribute elements evenly between minimul and maximum from selected. Ctrl+Click: Distribute with align.
	Sort elements Horizontally by Height. Right Click: Sort in reverse order.
	Sort elements Vertically by Width. Right Click: Sort in reverse order.
	Align elements or vertices/edges selection.
To Border	Align to texture tile border.
As Group	Align selection as one Group to texture tile border.
Select	Select similar uv elements. Selection based on element topology and geometry area. Value in Similar spinner is area similarity. 1.0 means exactly the same area, 0.0 means that area will be ignored. Multiple selection is allowed.
Stack	Stack similar uv elements. Move all similar elements to one position. Shift+Click: Stack outside tile. Secondary elements will be moved to next texture tile (+1 by U axis) to prevent overlap with main elements. Usable for texture baking of stacked elements. Ctrl+Click: Stack and Group elements. Unwrap Groups are used here. Each group could be Packed as one element. Right Click: Ungroup selected elements.

U	Move Right (U +1). Right Click: Move Left (U -1).
V	Move Top (V +1). Right Click: Move Bottom (V -1).
MOVE	Offset mapping by U or V axis. Shift+Drag: Swap axis.
SCALE	Scale mapping by U or V axis. Shift+Drag: Swap axis.
ROTATE	Rotate mapping.
Uniform	Uniform scale switch. If enabled then scale.
ACCURACY	Offset accuracy multiplier. Offset value will be multiplied by this factor. Auto mode works well in most cases.
Invert	Invert transform direction. On: For viewport. Off: For UV editor.
Zero	Enable Scale and Rotate from zero point (0,0 uv coordinates). On: Scale and Rotate from zero point. Off: Scale and Rotate from center.

U V	Enable/Disable randomize by U and V axis.
Geo Elements	Randomize by geometry elements instead of mapping elements.
Keep in Tile	Keep elements in texture tile. UV will be scaled to fit texture. This option helps to avoid seams when using non-seamless textures.
Offset	Randomize UV position.
Rotate	Randomize UV rotation.
Scale	Randomize UV scale.
Step	Use absolute values instead of random value from range. For example: Rotate value is 90. Regular randomizer will rotate elements by random values between -90 and +90 (-53, 47, 13, etc.). Step randomizer will use only -90 or +90 values only.
Select %	Select random elements in percents of current selection.
Shuffle U	Shuffle elements in multiple stacks Horizontally in random order. Number of stacks controlled by spinner value. Each stack will contain the same number of elements if possible.
Shuffle V	Shuffle elements in multiple stacks Vertically in random order.

UV Morpher	Create flat object that represents object mapping. Copy object and morph to UV. Shift+Click: Repack before creating flat object. May be slow on high-poly.
Show	Switch display Morpher objects as box.
	Morpher 1 channel value.
Skin Wrap	Add Skin Wrap modifiers to selected objects with nearest morpher in list. Ctrl+Click: Pick Morpher object manually. Shift+Click: Add disabled Skin Wrap modifiers.
Cut	Cut selected objects to Morpher borders. Ctrl+Click: Pick cut object manually.
UV Smooth	Add Edit Poly modifier and create Smooth Groups by mapping elements.
Hide/Unhide	Hide selected elements. Only for EditablePoly. Ctrl+Click: Hide selected polygons. Righ Click: Unhide all polygons.
Transfer	Transfer subobject selection between Unwrap and EditablePoly. Selection will be sent to nearest valid modifier. If no valid modifiers are found, then new modifier will be added automatically. Check "Geometry Tools" video. Shift+Click: Search valid modifiers only above current modifier. Send selection Up the stack. Ctrl+Click: Search valid modifiers only below current modifier. Send selection Down the stack. Alt+Click: Don't search and send selection to new modifier. Can be combined with Shift/Ctrl. Righ Click: Open Transfer Selection dialog. Current modifier is marked by <<<. You can send selection to modifiers that marked by >>>. If current modifier is Unwrap, then you can send selection to Edit Poly and Editable Poly and vice versa. Create new modifier: Send selection to new modifier. Modifier will be added above selected item in list. Keep current selection: Transfered selection will be added to current selection.

Size	Textures size.
V	Enable V size.
Size to Tiling	Set tiling in selected textures based on entered size and Unwrap selection. Textures should be selected in Material Editor.
Rw to Tiling	Convert real-world mapping to regular. Real-World in object textures will be disabled and tilings/offsets will be setup in order to match previous real-world scale. UV will be scaled to fit texture Tile. Ctrl+Click: Scale UV to maximum real-world texture size.
Bitmap to UV	Transfer bitmap transformations to UV (tiling, offset, rotation). UV of each submaterial will be transformed individually based on first bitmap properties. All bitmaps on selected objects will reset their transformations, tiling will be set to 1:1, offset and rotation to 0.

Collapse to Poly	Convert objects to EditablePoly after collapse modifiers.
Restore Map Channel 1	Restore Map Channel 1 if Channel is not found in current modifier.
Rename Unwrap mod	Rename Unwrap modifier to "Unwrap UV Tools".
Checker Smart size	Guess checker size and real-world state from object textures. Maximum size will be used as checker size.
Remember last tab	Activate last used tab on start.
MAIN Tab Rollouts	Rollouts used in Main Tab. Others will be placed in Extra Tab.
Stop after closing UI	Stop Tweaker after closing UV Tools main dialog.
Display info	Display tweak values in viewport.
Select Unwrap Group	Tweak all elements in Unwrap Group simultaneously.
Ctrl + Drag angle	Tweak Ctrl+Drag rotate angle.
Alt + Click angle	Tweak Alt+Click rotate angle.
Invert Rotate	Invert Rotate by 90 degrees function. On - for Viewport, Off - for UV Editor.
Size + - step	UV size + - step.
Fit Spacing	UV padding used in Fit function.
Save Unwrap setup	Save current Unwrap modifier setup as Default. All options from modify panel will be saved and used for new Unwrap modifiers that you create by pressing Add button.

Video

Due to constant script updates some of the functions shown in these videos can work different in the latest script version. Check Help section to find more actual information.