expr 

Note: only variable allowed in expression is v (or for an expression for tau or inf,
alpha and beta can be used too). Also, liberal use of brackets, e.g. 5.0*(exp (-50*(v +46))) instead 
of 5.0* exp (-50*(v +46)) is advised, due to GENESIS's handling of exp, abs, etc.

Attribute Information

Used By

Complex Type Deprecated_GenericEquation

Source 

<xs:attribute name="expr" type="xs:string" use="required">
  <xs:annotation>
    <xs:documentation>Note: only variable allowed in expression is v (or for an expression for tau or inf, alpha and beta can be used too). Also, liberal use of brackets, e.g. 5.0*(exp (-50*(v +46))) instead of 5.0* exp (-50*(v +46)) is advised, due to GENESIS's handling of exp, abs, etc.</xs:documentation>
  </xs:annotation>
</xs:attribute>

Sample