DER_DBG_TABGRID environment variable

The DER_DBG_TABGRID environment variable affects how the debugger uses tab characters to align tabs to columns in a source or mixed view within a Source pane. The value of this variable is an integer indicating the starting position and frequency of the tab. For example, if you set DER_DBG_TABGRID=6, the debugger sets tab stops at 6, 12, 18, 24, and so on. If DER_DBG_TABGRID is set to a nonzero value, the setting of DER_DBG_TAB has no effect.

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Setting environment variables for the debugger

Related References
DER_DBG_TAB environment variable