dd if=/dev/zero of=blank.dsk bs=256 count=630
+# Compiling bif-img:
+cc -Wall -o bif-img bif-img.c
+
+# Inserting variable line source in sievegforth.bif6809
+# into disk image sieveplay.dsk at SCREEN 50:
+../bif-img --to-screens sievegforth.bif6809 sieveplay.dsk -off=50
+
+# Extracting the source inserted above into the file sievegforth.fs
+../bif-img --to-eoln-text sieveplay.dsk -- -off=50 -count=3 > sievegforth.fs
+
+# With line numbers:
+../bif-img --to-eoln-text sieveplay.dsk -- -off=44 -count=6 | cat -n
+