1974. Despite these predecessors, Wang's product was a standout, and by 1978 it had sold more of these systems than any other vendor.<ref>Schuyten, Peter J. (1978): "Wang Labs: Healthy Survivor" The New York Times December 6, 1978 p. D1: "[Market research analyst] Amy Wohl... said... 'Since then, the company has installed more of these systems than any other vendor in the business."</ref> The phrase "word processor" rapidly came to refer to CRT-based machines similar to the AES 90. Numerous machines of this kind emerged, typically marketed by traditional office-equipment companies such as IBM, Lanier (marketing AES Data machines, re-badged), CPT, and NBI. All were specialized, dedicated, proprietary systems, priced around $10,000. Cheap general-purpose computers were still for hobbyists. Some of the earliest CRT-based machines used cassette tapes for removable-memory storage until floppy diskettes became available for this purpose - first the 8-inch floppy, then the 5¼-inch (drives by Shugart Associates and diskettes by Dysan). Printing of documents was initially accomplished using IBM Selectric typewriters modified for ASCII-character input. These were later replaced by application-specific daisy wheel printers, first developed by Diablo, which became a Xerox company, and later by Qume. For quicker "draft" printing, dot-matrix line printers were optional alternatives with some word processors. WYSIWYG models Electric Pencil, released in December 1976, was the first word processor software for microcomputers. Software-based word processors running on general-purpose personal computers gradually displaced dedicated word processors, and the term came to refer to software rather than hardware. Some programs were modeled after particular dedicated WP hardware. MultiMate, for example, was written for an insurance company that had hundreds of typists using Wang systems, and spread from there to other Wang customers. To adapt to the smaller, more generic PC keyboard, MultiMate used stick-on labels and a large plastic clip-on template to remind users of its dozens of Wang-like functions, using the shift, alt and ctrl keys with the 10 IBM function keys and many of the alphabet keys. Other early word-processing software required users to memorize semi-mnemonic key combinations rather than pressing keys labelled "copy" or "bold". (In fact, many early PCs lacked cursor keys; WordStar famously used the E-S-D-X-centered "diamond" for cursor navigation, and modern vi-like editors encourage use of hjkl for navigation.) However, the price differences between dedicated word processors and general-purpose PCs, and the value added to the latter by software such as VisiCalc, were so compelling that personal computers