To install OFP Script Editor, download it and extract all the files in the .zip file to a dedicated folder for it.
Then run the OFPSEdit.exe file in the folder (you might want to make a shortcut to this item to make launching it easier).
To configure OFP Script Editor, select the Options command from the Tools menu.
This will display the Options dialog with three tabs.
I won't go into detail with these options as they're relatively self-explanatory, but ensure the OFP Script Editor Path
text box contains the path to the directory that OFP Script Editor is located in.
The Registered File Types tab allows you to set what (if any) file types are registered with OFP Script Editor for opening
when double-clicked in Windows.
Save button.
Click the OK button to save changes.
The Add Weapons / Ammo / Equipment dialog allows you to insert code into the current document where the caret (text cursor) is that will add weapons, ammo and/or equipment to a unit or crate.
To display the Add Weapons / Ammo / Equipment dialog, select the Add Weapons/Ammo/Equipment command from the Insert menu.
First of all, you must have a unit or crate that has been named in the Mission Editor in OFP.
Then select from the combo box whether you want to add items to a Unit (soldier) or a Crate, and then enter the unit/crate name in the
Name text box.
There are then three list controls, one containing all the weapons in OFP, one containing all the Ammo (Magazines) and one containing
all the Equipment. For an item to be added to a unit/crate, it must be checked in the respective list control, so check (click the Available column
on the respective item) the items you want.
You can then set the quantity of items you want. To do this, click the Quantity column on the
respective item, and an edit control will appear. Enter the new number you want here.
When you have changed everything to your satisfaction, click the OK button to add the code to the current document.
The create description.ext file wizard creates description.ext files for missions. These files allow you to configure the mission, for example if there
should be respawn in multiplayer missions, what do display in the briefing screen.
You can also configure what weapons / ammo / equipment are available for selection in the briefing screen.
To do this, tick the Custom Weapons check box
and click the Available Weapons... button to select what weapons / ammo / equipment is available.
Enter the path of the folder where you want the description.ext file to be created, and click the OK button to create it.