When long pressing the empty space or text in PDF, there is a quick menu with buttons shows up. This is a cheat sheet for each icon.
Long pressing icon will also show the text of the button
| Icon | Name | Description |
|---|---|---|
 | Rectangle | Add a rectangle |
 | Ellipse | Add an ellipse |
 | Polyline | Add a polyline |
 | Polygon | Add a polygon |
 | Cloud | Add a cloud |
 | Line | Add a line |
 | Arrow | Add an arrow |
 | Ruler | Add a measurement ruler |
 | Perimeter | Add a measurement for perimeter |
 | Polygon Area | Add a measurement for polygon area |
 | Rectangular Area | Add a measurement for rectangular area |
 | Free text | Type on the document |
 | Callout | Free text with arrows |
 | Note | Add a comment |
 | Ink | Draw on the document |
 | Eraser | Erase ink stroke |
 | Signature | Add a signature |
 | Image stamp | Add an image stamp |
 | Rubber stamp | Add a rubber stamp |
 | Search | Search text on internet |
 | Free highlighter | Highlight anything |
 | Highlight | Highlight text |
 | Underline | Underline text |
 | Squiggly | Add a squiggly annotation |
 | Strikeout | Strike out text |
 | Sound | Add a sound annotation |
 | File attachment | Add a file attachment annotation |
 | Text field | Add a text form field widget |
 | Signature field | Add a signature form field widget |
 | Checkbox field | Add a checkbox form field widget |
 | Radio button field | Add a radio button form field widget |
 | List box field | Add a list box form field widget |
 | Combo box field | Add a combo box form field widget |
 | Spacing text | Add a free text with variable character spacing |
 | Date text | Add a free text with date |
 | Group select | Selects multiple annotations |
 | Lasso group select | Selects multiple annotations with lasso tool |
 | Pan | Default pan tool |