~~Title: Val~~
<evalcmd>
Val && var && Value of the named argument. &&
varname && string && Name of the argument. &&
[deref] && bool && Dereference argument value.
</evalcmd>

Returns the value of a variable; //varname// is provided as a quoted string. This is useful for variables which contain characters that would confuse the Evaluator's parser (e.g. if the name begins with a number, or contains a colon).

//Example://
<code>
flag = Val("35mmfocallength"); // get value of the 35mmfocallength field
</code>

If the //deref// parameter is set to **true**, it causes the named variable to be dereferenced. That is, the named variable should hold a string which is the name of another variable, and the function will return the value of that second variable. For example,

<code>
a = "b";
b = "c";
Output(Val(a)); // -> "b"
Output(Val(a, true)); // -> "c"
</code>