This is usefull for scirpt submissions e.g.
The SMBX Magic Patcher has a userfriedly GUI.
It use a own file format: .plx (= SMBX Magic Level Patch). It supports .slp files (= SMBX Level Patcher) too.
Here two screenshorts wich explain itself:


If you need help then move your mouse cursor over the control and a ToolTip will open and explain it.
If you have any suggestions or problems then please tell me.
Download (v1.1)
Download (v1.0)
GitHub Page