Tileset is a 512x512 pixel image that is 32x32 pixel grids.
a 32x32 pixel grid image is called Tile.
You can use Pich-In, Pich-Out.
You can choose a tile that you want to edit.
You can select area with drag.
If you tap the select cursor, It's show edit menu.
Edit menu is
Cut selected tiles.
Copy selected tiles.
Paste tiles. If pasteboard tile is different tile size, paste repeated.
Paste palette only.
If pasteboad image is different size, paste image scaled.
Delete selected tiles.
Create empty tile set.
Duplicate tile set.
Export tile set.
Import backup tile set.
Selected tile is deleted.
This is a file name.
You can export selected tiles as some type you want.
You can change image type and size at Tile cell in More tab.