HEIDENHAIN TNC 122 User Manual - Manual (Page 9)

TNC 122 9
Special Notes in This Manual
Especially important information is shown as a separate note in a
gray box. Pay special attention to these notes. Ignoring them
would prevent effective use of the control, or even result in
damage to the tool or workpiece.
Symbols in the gray boxes
The symbols in the left of the gray boxes indicate the nature of the
provided information.
General information
for example on the machine tool.function
Information for the machine tool builder
for example that he must implement a certain function
Essential information
for example that a certain tool is needed for the
described function