--- /dev/null
+
+#------------------------------------------------------------------------------
+# pdp: file(1) magic for PDP-11 executable/object and APL workspace
+#
+0 lelong 0101555 PDP-11 single precision APL workspace
+0 lelong 0101554 PDP-11 double precision APL workspace
+#
+# PDP-11 a.out
+#
+0 leshort 0407 PDP-11 executable
+>8 leshort >0 not stripped
+>15 byte >0 - version %ld
+
+0 leshort 0401 PDP-11 UNIX/RT ldp
+0 leshort 0405 PDP-11 old overlay
+
+0 leshort 0410 PDP-11 pure executable
+>8 leshort >0 not stripped
+>15 byte >0 - version %ld
+
+0 leshort 0411 PDP-11 separate I&D executable
+>8 leshort >0 not stripped
+>15 byte >0 - version %ld
+
+0 leshort 0437 PDP-11 kernel overlay