TradeStation Help
You can enable a confirmation dialog box for when you delete a window from a workspace that asks if you want to permanently delete the window. By default, this setting is not enabled, therefore unless you enable the setting, you will not receive a confirmation message before you delete a window from a workspace.
A check
mark in the Confirmations check box indicates that a confirmation message
will appear when deleting any window type. A green square displayed in
the check box indicates that, for one or more windows, the delete confirmation
message was displayed and you selected the 'Do not display this message
again for this type of window' option. Thus, the confirmation will
be displayed for some windows, but not for others. To reset the display
of the confirmation message, you can either clear the check box (disabling
the confirmation for all window types) or re-check the check box (enabling
the confirmation for all window types).