Karin C's example

grammars/video/README

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+Video dialogue grammars by Karin Cavallin. 
+
+Reconstructed in GF 2 with multiple inheritance. AR 16/9/2004
+
+Example usage (test Swedish generation and parsing, and Prolog
+generation)
+
+  > i allSwe.gf
+  > i allProlog.gf
+
+  > gr -cat=DMove | l -tr -lang=allSwe | p -cat=DMove -lang=allSwe | l -lang=allProlog
+  vill du använda svenska eller engelska
+  ask ([language (X)])
+
+The intended use of that grammar is in dialogue systems to program a
+video recorder. Queries in Swedish are translated to Prolog.
+
+The original grammar is written in GF 1.2 and includes. There is a
+very nice modular structure, which could not be reproduced with the
+single inheritance straightjacket of GF 2.0. But now we can finally
+do this again!
+
+
+Map of abstract syntax inheritances.
+
+                all
+              /     \
+             /       \
+     specUser         specSystem
+    /        \       /          \
+ genUser      specific        genSystem
+  |         /  |    |  \          |
+  |        /   |    |   \         |
+  |       / channel time weekday  |
+  |      |                        |
+  |      |                        |
+   -----general ------------------
+
+
+The map was obtained by:
+
+grep abstract *.gf */*.gf
+
+all.gf:abstract all = specUser,specSystem **  {
+Channel/channel.gf:abstract channel = {
+Shared/general.gf:abstract general = {
+Shared/specific.gf:abstract specific = general, weekday, time, channel ** {
+System/genSystem.gf:abstract genSystem = general ** {
+System/specSystem.gf:abstract specSystem = specific, genSystem ** {
+Time/time.gf:abstract time = {
+User/genUser.gf:abstract genUser = general ** {
+User/specUser.gf:abstract specUser = specific, genUser ** {
+Weekday/weekday.gf:abstract weekday = {