Sets the amount of extra indentation for child levels to use in @tree_view
in addition to the default indentation. The value should be specified in
pixels, a value of 0 disables this feature and in this case only the default
indentation will be used.
This does not have any visible effects for lists.
Sets the amount of extra indentation for child levels to use in @tree_view in addition to the default indentation. The value should be specified in pixels, a value of 0 disables this feature and in this case only the default indentation will be used. This does not have any visible effects for lists.