Here is a fully functional UIS1 skin that I made (the Windows 3.1 skin):
---
[TitlebarSkin]
SkinName = Windows31
SkinAuthor = You
ActiveTitle=Windows31\horizontal.bmp
[Borders]
vertFrame = Windows31\vertical.bmp
HorzFrame = Windows31\horizontal.bmp
TopTopHeight = 24 ;start tiling 24 pixels from top.
TopBotHeight = 24 ;from bottom.
LeftTopHeight = 24 ;from top left (downwards)
LeftBotHeight = 24 ;from bottom left (upwards)
RightTopHeight = 24 ;from top right
RightBotHeight = 24 ;from bottom right
BottomTopHeight = 24 ;from the bottom in on right
BottomBotHeight = 24 ;from the bottom in on the left (yea, these could be named better)
; We want our title bar text to be moved over from the left
; by 30 pixels and there are 4 title bar buttons.
[Caption]
TextLeftShift = 30
ButtonCount = 4
; Our close button
[Button0]
XCoord = 0
YCoord = 3
Align = 0 ; align from left
Action = 0 ; close the window
ButtonImage = Windows31\sys.bmp
Visibility = 0 ; always show it.
[Button1]
XCoord = 19
YCoord = 4
Align = 1 ; align from right
Action = 1 ; maximize the window
ButtonImage = Windows31\max.bmp
Visibility = 20 ; show only if there is a maximize button.
[Button2]
XCoord = 38
YCoord = 4
Align = 1
Action = 2 ; minimize the window
ButtonImage = Windows31\min.bmp
Visibility = 22 ; show only if there is a minimize button
[Button3]
XCoord = 19
YCoord = 4
Align = 1
Action = 1 ; restore the window
ButtonImage = Windows31\restore.bmp
Visibility = 3 ; show only if there is a restore button.
-----
Pretty small.