Need to change smart form "J_1IEWT_CERT"

Dear Specialists,

In smart form there are the sentence " Son/Daughter". My customer request to set line for strike out to "Daugher".

However, as long as I know, there are no functions in smart forms to set line for strke out.

Can someone tell me how to set strike out line in smart forms?

Can someone tell me how this requests are dealt by Indian technicians?

Satoshi Matsumoto