Does Cups support DeviceAdjustMatrix?

[Jonathan Ryshpan]

Helge Blischke wrote:
> The JobPatchFile PPD keyword is honoured by CUPS, so you could modify your PPD for that.

I would think that the following PPD file:
...
*LanguageLevel: "3"
*ColorDevice:   False
*DefaultColorSpace: Gray
*FileSystem:    False
*Throughput:    "1"
*% =================
*% PostScript Patch
*% =================
*JobPatchFile 1: "
0.5 0.5 scale"
*% =================
*% Patch Ends
*% =================
*LandscapeOrientation: Plus90
*TTRasterizer:  Type42
*1284DeviceID: "MFG:Brother;MDL:HL-1440 series;CMD:PCL4,PJL;"
...
would make everything print half size.  But it doesn't.

What's wrong?  Please excuse my ignorance.

jon