~~Title: IsSet~~
<evalcmd>
IsSet && bool && **True** if all specified variables exist. &&
name && var && Name of variable to test for. &&
[name...] && var && Additional variable names...
</evalcmd>

Returns **True** if all specified variables exist (within the context of this evaluation). Returns **False** if any do not exist.

//Example://
<code>
if (IsSet("j")) { ... } // does a variable called "j" exist?
if (IsSet("name", "ext")) { ... } // do variables called "name" and "ext" both exist?
</code>


//See also://
[[val]]