Add a few more PDF tips

how_to

@@ -218,6 +218,9 @@ PDF :
         Extract pages :
             pdftk input.pdf cat <range> output out.pdf
             # range can be <start>-<end>, more info at pdftk --help
+            # Use qualifiers like odd/even, north/east/south/west/left/right/down
+            # (respectively 0, 90, 180, 270, -90, +90, +180, clockwise)
+            # ex: pdftk A=in.pdf B=other.pdf cat A1 B1-5 B6west A8
         Uncompress pdf file content :
             pdftk input.pdf output output.pdf uncompress
     Extract text from pdf (poppler):
@@ -251,6 +254,10 @@ PDF :
             Filling the form:
                 pdftk form.pdf fill_form fields.fdf output filled_form.pdf
 
+Generate a PDF quickly from Markdown:
+    # tectonic is pretty nice as a "it just works" latex compiler
+    pandoc --pdf-engine=tectonic in.md -o out.pdf
+
 Fill dynamic XFA forms on linux:
     Run Acrobat Reader DC 2019 on wine:
         https://linuxconfig.org/how-to-install-latest-adobe-acrobat-reader-dc-on-ubuntu-18-04-bionic-beaver-linux-with-wine