The Z8000 port of as includes additional assembler directives, for compatibility with other Z8000 assemblers. These do not begin with . (unlike the ordinary as directives).
svalexpects one string literal, delimited by single quotes. It assembles each byte of the string into consecutive addresses. You can use the escape sequence %xx (where xx represents a two-digit hexadecimal number) to represent the character whose ascii value is xx. Use this feature to describe single quote and other characters that may not appear in string literals as themselves. For example, the C statement char *a = "he said \"it's 50% off\""; is represented in Z8000 assembly language (shown with the assembler output in hex at the left) as
68652073 sval 'he said %22it%27s 50%25 off%22%00' 61696420 22697427 73203530 25206F66 662200
.align; aligns output to even byte boundary.