Hi Duncan,

It probably doesn't help, but this still works:

<mrow><mtext>vol</mtext><mo>×—</mo><msqrt>

Sorry I cannot help any further.

Taco

Ah! You have indeed helped, by pointing out that I am failing to strip the mml: prefix from my mtext elements. Apologies for the noise - I couldn't see it for staring at it. Thanks Taco. Duncan