SCRIPT is a procedural markup language. Inline commands called control words, indicated by a period in the first column of a logical line, describe the desired appearance of the formatted text. SCRIPT originally provided a 2PASS option to allow text to refer to variables defined later in the text, but subsequent versions allowed more than two passes.
^ abStuart E. Madnick and Allen G. Moulton (1968) "SCRIPT, An Online Manuscript Processing System"(PDF). Retrieved 2012-09-12. IEEE Transactions on Engineering Writing and Speech, Vol. EWS-11, No. 2, pp. 92-100.