Or with xsl:when to check for multiple values

Hi,

I want to check a value against few strings.
Can i do something like

<xsl:when test="$var = 'val1'" or "$var = 'val2'" or "$var = 'val3'">
  some action
</xsl:when>

Or to achieve this i have to write like
 <xsl:when test="$var = 'val1'" >
       Some action
  <xsl:when>
 <xsl:when test="$var = 'val2'">
     Some action
 </xsl:when>

Since the action code is same I thought if something can be done writing OR 
expression. Is there some other way to achieve it more effectively.

I hope i am clear in explaining my problem.
Thanks in the anticipation that I will get some good hints to solve this.

Regards,
Dipesh


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