From the filters documentation:
filter will be called to transform every bit of text output using format_text(), and possibly also format_string()
So the text should be processed by these functions (https://docs.moodle.org/dev/Output_functions)
From the filters documentation:
filter will be called to transform every bit of text output using format_text(), and possibly also format_string()
So the text should be processed by these functions (https://docs.moodle.org/dev/Output_functions)