updated for version 7.1a

runtime/icons/README.txt

+Choose your preferred icon and replace the standard Vim icon with it.
+[This is for the Amiga]
+
+When started from Workbench, Vim opens a window of standard terminal size
+(80 x 25). Trying to change this by adding a tool type results in a window
+that disappears before Vim comes up in its own window.
+If you want Vim to start with another size, it can be done using
+IconX.
+
+Follow these steps:
+
+1. Create a script file called e.g. Vim.WB, with a single line in which the
+   Vim executable is started:
+      Echo "Vim" > Vim.WB
+      Protect Vim.WB +s
+
+2. Rename the Vim icon to Vim.WB.
+
+3. By default, the Vim icon is a program icon.
+   Change the icon type from "program" to "project" using IconEdit from the
+   "Tools" directory.
+
+4. Change the icon settings using "information" from the WorkBench's "icon"
+   menu:
+   - The default program, of course, is "IconX".
+   - A stack size of 4096 should be sufficient.
+   - Create a WINDOW tooltype of the desired size.
+     The appropriate values depend on your WB font.
+
+   Example:
+   On a standard non-interlaced WB screen with full overscan resolution
+   (724 x 283 ), the WINDOW tooltype "CON:30/10/664/273" results in a
+   horizontally centered window with 80 columns and 32 lines.
+
+Now Vim comes up with the new window size.