# <a name='log-window'>
# Log Window
+`DEBUG_0()`
+Use `DEBUG_0()` only for temporary debugging i.e. not in code in the repository.
+The user will then not see irrelevant debug output when the default
+`debug level = 0` is used.
`log_printf()`
If the first word of the message is "error" or "warning" (case insensitive) the message will be color-coded appropriately.