The following placeholder-icons are used in GeoGebra at the moment. They have to be replaced with real icons for the manual, videos and other 4.0 materials as soon as possible.

Toolbar

• Insert Button (32x32, should be similar to insert checkbox icon)
• Insert Textfield (32x32, should be similar to insert checkbox icon)
• Pen Tool (32x32, no similar icon exists)

Option Dialog

(The tabbing-icons at the top of the dialog.)

• Default (32x32, no similar icon exists)
• Graphics (32x32, no similar icon exists)
• Spreadsheet (32x32, maybe based around gui/images/table.png)
• CAS (32x32, no similar icon exists)
• Advanced (32x32, no similar icon exists)

HTML export

(File -> Export -> As Dynamic Webpage)

• Upload to GeoGebraTube (32x32, no similar icon exists)
• Export as HTML (32x32, no similar icon exists)

More ?

Are there other places where placeholders are used or where the usage of icons would be beneficial?