July 2013 8.1 Display and operation 1195
8.1.8 TNCguide – context-sensitive help system for the iTNC 530 (user documentation)
The help system was integrated on the basis of the CHM help format known
from Windows. The CHM format was introduced by Microsoft in 1997 with
the HTML help system, and is now used by many Windows programs. It is a
collection of individual HTML files that are collected in a single compressed
file.
Mozilla Firefox is used as the browser on the iTNC 530.
In principle, the iTNC 530 will be able to open and display any CHM files,
including those prepared by the OEM. HEIDENHAIN will generally supply the
following documentation in the form of CHM files together with the iTNC
software:
Conversational Programming User’s Manual
Touch Probe Cycles User’s Manual
smarT.NC Pilot
Collection of all NC error messages
The User’s Manual for the programming station is also supplied with the
iTNC 530 programming station. Context-sensitive entry points are defined for
these files, meaning that pressing the HELP key brings the user directly to the
appropriate location in the documentation. If no context-sensitive entry point
is available, the TNC opens the parent main.chm book file, in which all CHM
files in the respective (language-sensitive) help directory are shown. The user
navigates to the desired entry with the mouse or the arrow keys.
TNCguide can also be opened with the mouse: after clicking the help symbol,
shown to the right directly above the soft-key row, the mouse pointer changes
to a question mark. If the user then clicks a soft key, the TNC starts the help
system and displays the description of this soft key, if a context-sensitive
entry point exists. If no context-sensitive entry point is available, the control
opens the parent main.chm book file, as described above.
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