|<big>'''H'''</big> || move home<sup>**</sup> || move to origin position (0/0 mm)
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|<big>'''i'''</big> || identify<sup>**</sup> || returns "ID: ''idwidht x-origin y-origin pulley_radius''" on serial line to identify the DrawBot<br>''id'' [0 ...7] - reflects the jumper settings of pins A0/A1/A2[0 ...7]<br>''width'' - distance of the two stepper motors
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|<big>'''#''' ''comment ...''</big> || comment<sup>**</sup> || rest of line, up to the next character 13 (carriage return), will be ignored<br>comment is echo'ed to the serial line