Fixed block comment.

Author: janpgit

posters/unix-poster-AR-2018.roff

@@ -1,5 +1,8 @@
-.\" A poster for the Unix prog lecture.  NOT FINISHED.
-
+.\" A poster for the Unix/Linux prog lecture for the winter semester 2018/2019.
+.\"
+.\" To generate a PDF, paste the following (any unix-like system with groff
+.\" should do, including a Mac):
+.\"
 .\" x=unix-poster-AR-2018; groff -Tps -P-pa4 $x.roff > $x.ps; ps2pdf $x.ps $x.pdf
 
 .po 0.75i