JOIN can join STRING! type variables
Categoryname
new-string: JOIN/WITH string1 string2
string1 - STRING! type value
string2 - STRING! type value
/WITH - Use the input to JOIN to
Joining STRING! types in Meta is done using JOIN. To be exact, JOIN/WITH. JOIN/WITH can be nested to concatenate more than 2 strings together at once. JOIN/WITH cannot handle numeric values so these will have to be cast to STRING! types first. This is done using FORM or TO STRING!.
Here you can see an error-message string to be put on a webpage getting extended with more information.
error-message: join/with join/with join/with error-message
line-in "
" new-line