diff --git a/src/libvterm/doc/URLs b/src/libvterm/doc/URLs
new file mode 100644
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+ECMA-48:
+  http://www.ecma-international.org/publications/standards/Ecma-048.htm
+
+Xterm Control Sequences:
+  http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+
+Digital VT100 User Guide:
+  http://vt100.net/docs/vt100-ug/
+
+Digital VT220 Programmer Reference Manual
+  http://vt100.net/docs/vt220-rm/