ForgetConstraint < Main

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---+Grammar Engineering Frequently Asked Questions

---++The LKB seems to be "forgetting" a constraint/definition I've coded. Why?

If you've coded a constraint in tdl but it isn't reflected in the LKB (there's no change to your grammar's behavior; when you look at an entry--rule, lexical entry, etc.--or a type which should be subject to the constraint using the View menu, you don't see the constraint), check the following:
 
   * Have you reloaded the grammar since you made the change?
   * Have you saved the tdl file you added the change to, before loading the grammar?
   * Does the entry you're considering actually inherit from the type you've put the constraint on?  (Double check in =lexicon.tdl=, =rules.tdl=, =irules.tdl=, =lrules.tdl=, whichever is relevant.)
   * Do you have multiple types with the same name?  If so, only the last one will "count" -- it will overwrite what came before.  You can use the search function in emacs to check whether this it the case.
   * Have you misspelled an outermost feature name (e.g., SYSNEM for SYNSEM)?
 
---+++Related topics


   * [[ExpandedType][How do I see what a type looks like with all of the cosntraints it inherits from super types?]]
   * [[ViewEntry][How do I look at fully specified lexical entries or rules?]]
   * [[ViewType][How do I see what definition the LKB has read in for a type?]]
   * [[OrderMatters][In which files does order matter?]]


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-- EmilyBender - 02 Nov 2004
Topic revision: r2 - 2008-03-02 - ebender