The problem with pi...

[Ste Wilson]

My templates allow cross referencing of variables, constants and equations. So voltage will list all of the equations which use it. All good. I also have Greek letters listed for reference and all equations which use that letter will be listed. The problem comes with pi.. Pi is a constant AND a Greek letter, and is tagged with both of these and so lists equations with pi in twice. All the other Greek variables are called other things.. Eg thermal heat transfer / second is big Phi. Can I stop the variable template filter kicking in for title Pi?

<$list filter='[is[current]tag[Greek Letters]]'>

Upper Case: {{!!variablelatexbig}}

Lower Case: {{!!variablelatexsmall}}

{{!!description}}

<$list filter="[title<currentTiddler>listed[greek]tag[Equation]] -[title<currentTiddler>] +[limit[1]]"><br><br>

<h2>Used in Equations</h2><br>

</$list>

<$list filter="[title<currentTiddler>listed[greek]tag[Equation]] -[title<currentTiddler>]">

<$link><$transclude field="title"/></$link>

<$transclude field="equation"/><br><br>

</$list>

</$list>

The variable, constant and Greek tags all have essentially the same code with slight variation. 

[Mark S.]

Maybe wrap the constant template with a list that makes sure that the current item is not already covered as a
Greek letter?

<$list filter="[is[current]!tag[greek]limit[1]]">
<$list filter="[is[current]tag[constant]]">
...

[swilson...@gmail.com]

Beautiful! Thank you!