Main Toolbar
The Main toolbar is used to run programs, erase the screen, and hide the palettes and blocks.

![]() |
Run the blocks in normal speed. When long pressed the run button:
When extra long pressed the run button:
|
![]() |
Run the blocks slowly. When running slowly, the values of parameter boxes are shown as an additional debugging aid. |
![]() |
Run the blocks step by step (one block is executed per turtle per click). |
![]() |
Stop running the current project. |
![]() |
Clear the screen and return the turtles to their initial positions in the center of the screen. |
![]() |
Hide or show the block palettes. |
![]() |
Expand or collapse stacks of blocks (start and action stacks). |
![]() |
Re-arrange the blocks workspace - relative to the top left corner of the workspace.
When home pressed the button changes to:
|
![]() |
Show the help messages. |