Document gbc pal spec format

I *knew* I had forgotten something!
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2022-10-01 10:48:40 +02:00
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@@ -374,14 +374,18 @@ can be used in an at-file (with identical semantics), it is only effective insid
.Sh PALETTE SPECIFICATION FORMATS
The following formats are supported:
.Bl -tag -width Ds
.It Sy act
.It Cm act
.Lk https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577411_pgfId-1070626 Adobe Photoshop color table .
.It Sy aco
.It Cm aco
.Lk https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577411_pgfId-1055819 Adobe Photoshop color swatch .
.It Sy psp
.Lk https://www.selapa.net/swatches/colors/fileformats.php#psp_pal Paint Shop Pro palette .
.It Sy gpl
.It Cm gbc
A GBC palette memory dump, as emitted by
.Nm Fl p .
Useful to force several images to share the same palette.
.It Cm gpl
.Lk https://docs.gimp.org/2.10/en/gimp-concepts-palettes.html GIMP palette .
.It Cm psp
.Lk https://www.selapa.net/swatches/colors/fileformats.php#psp_pal Paint Shop Pro palette .
.El
.Pp
If you wish for another format to be supported, please open an issue (see