Cannot use backslash to continue long string lines

[dplassgit]

nasm allows this syntax:

bigtext: db 'Lorem ipsem', 10, \
 'second line', 10 \
 'third line', 10, 0

But tinyasm gives errors:

Error: Missing apostrophe at line 3
Error: extra characters at end of line 3
Error: Undefined instruction ''second line', 10, \' at line 4
Error: Undefined instruction ''third line', 10, \' at line 5