TLTXT
1 Copy some text to your clipboard.
2 Use the 
TLTXT tool on the toolbar to insert it on the whiteboard.
3 With the 
Select tool active, Right click on the whiteboard, Select all.
4 Right click on the selected text, Copy.
5 Change to a tldraw.com tab, use the 
top menu, Edit > Paste to paste in position. (Right-click > Paste would insert it centered on the cursor.)
Use this bookmarklet to show the Pāli declension cases: Declensions (Drag the link to your bookmarks and use on tldraw.com). Tutorial video: How to use TLTXT to add text and the Declensions bookmarklet (youtube.com)