Mari 4.6v4 docs:

Import Dialog

The Import dialog is described below with functions for how to access it. A list of the controls on the dialog can be found in the table below.

What It Does

Invoked by the import channel functions and import layer functions, the Import dialog box lets you specify options for importing channels or layers. This can be done by importing textures into existing layer stacks, layers, or as new channels, however, importing textures as a new channel only opens the Import dialog box after first selecting options for the new channel from the Add Channel Dialog.

How to Access It

• Menubar | Channels > Import > any of the dropdown options

• Menubar | Layers > Import > any of the dropdown options

• Right-click | Channels Palette > Import > any of the dropdown options

• Right-click | Layers Palette > Import > any of the dropdown options

Import Channel Dialog Fields

Control	Type	What it does	Notes
Named Files - The Named files tab does not display if your model contains more than 20 patches.
U	information	Lists the U texture coordinate for the left edge of the patch.
V	information	Lists the V texture coordinate for the bottom edge of the patch.
UDIM	information	Lists the UDIM number for the patch.
File	text field	Specify the file location to import from.
	button	Browse to the file location you want to export the texture to.
Sequence
Channel/ Layer	information	The name of the channel or layer that is being imported.	This name is only displayed if a name has been assigned to the selected layer.
Path	text field, dropdown	The directory containing the files to import. Type the directory, select a recent directory from the dropdown, or use the navigation controls below.	Make sure you check the path and name carefully, especially if you have been swapping between assets - Mari defaults to the last place you imported from. Don't risk overwriting your textures!
Reset To Defaults	button	Resets the path to the default location.
	button	Goes back to the previous directory.
	button	Goes forward to the next directory that you have browsed.	Only available if you have already browsed back using the back button.
	button	Goes up one level in the directory hierarchy.
	button	Creates a new folder in the current directory.
	button	Displays the contents of the directory as icons and names only.
	button	Displays the contents of the directory as a details view, with a sort option at the top of the listing.
Filter	text field, dropdown	Lets you filter the image sequences displayed in the dialog box. As you enter the filter text, Mari updates the display to only show the image sequences that match your text.
Full	Image	Indicates whether the selected image sequence has a full set of images for the current model. That is, for each patch on the model, there is a corresponding image in the image sequence. Green if the selected image sequence has a full set of images for the current model, yellow if the selected image sequence has a partial set of images for the current model, or red if the selected image sequence has no images for the current model.
Images	information	Lists the image sequences found in the selected Path.
Start	information	First UDIM number in the selected image sequence.
End	information	Last UDIM number in the selected image sequence.
Patch Count	information	Number of image patches in the image sequence.
Frames	information	How many frames in the image sequence.
Modified	information	Last modified date for the images in the sequence.
Template	text field, dropdown	Specify or select a preset format for automatically naming and numbering files on import. Variables available are: • $ENTITY - the name of the object • $CHANNEL - the name of the channel • $LAYER - the name of the layer • $NODE - the name of the node • $UDIM - the UDIM patch value • $FRAME - the animation frame number • $NUMBER - number of the file within the batch (for example, “$NUMBER of $COUNT” gives strings like “22 of 28”) • $COUNT - total number of files in the channel • $COLORSPACE - the chosen colorspace for the selected images. • $[METADATA VALUE] - any user-defined variables (for example, if a patch has a user attribute called “PROJECT”, with a value of “Project1”, Mari replaces the variable “$PROJECT” with “Project1”).	Don't use numbers in your texture name - if you do, the Import and Export dialog boxes won't recognize the sequence.
File Example	information	Displays an example of the selected template path and filename.
Formats	Information	Displays a list of supported import file formats.
Import Dialog: General Controls
Colorspace	dropdown	The colorspace to which the input values are converted. Automatic is determined by the file name, size, and type of data in file.
Resize	dropdown	How Mari handles patch/image size mismatches (for example, attempting to import a 1024x1024 image to a 2048x2048 patch). You can select either to resize the Images to match the patches, or to resize the Patches to match the images.
Alpha Channels	dropdown	Choose to either Keep or Remove alpha channels when importing textures. This can help decrease the resulting file size when importing images that don’t need alpha channels.
Import All Patches	button	Imports textures onto all patches in the project.
Import Selected Patches	button	Appears instead of Import All Patches when at least one patch is selected.
Cancel	button	Closes the dialog box without importing.