Ok ….just one little BUG
M291: Display message and optionally wait for response
Supported in firmware version 1.19beta7 and later.
Parameters
P"message" The message to display, which must be enclosed in double quotation marks. if the message itself contains a double quotation mark, use two double quotation marks to represent it.
R"message" Optional title for the message box. Must be enclosed in double quotation marks too.
Sn 0 = no acknowledgement needed (default), 1 = display an OK button and wait for it to be pressed (the user interface then sends M292 to indicate that is has been acknowledged)
Tn Timeout in seconds, ignored if S=1. The message will be cancelled after this amount of time, if the user does not cancel it before then. A zero or negative value means that the message does not time (it may still be cancelled by the user). The default value is 10 seconds
Zn 0 = no special action, 1 = display Z jog buttons alongside the message to allow the user to adjust the height of the print head
if set Z0 appear the jog control ,also is set Z1 😉