https://learn.microsoft.com/en-us/dotnet/desktop/winforms/controls/how-to-remove-a-toolstripmenuitem-from-an-mdi-drop-down-menu-windows-forms
How to: Remove a ToolStripMenuItem from an MDI Drop-Down Menu - Windows Forms | Microsoft Learn
Learn about how to remove a ToolStripMenuItem from an MDI drop-down menu in Windows Forms via a 12-step procedure.
https://www.syncfusion.com/forums/107649/toolstripmenuitem-image-only
ToolStripMenuItem image only | WinForms | Tools | Syncfusion
Forum Thread - Tools - ToolStripMenuItem image only. Browse other users' questions about our WinForms Tools components.
image onlywinformstoolssyncfusion