Problems updating d d character builder
Improving technology allowed the production of cheaper bitmapped displays, and WYSIWYG software started to appear for more popular computers, including Lisa Write for the Apple Lisa, released in 1983, and Mac Write for the Apple Macintosh, released in 1984.The Apple Macintosh system was originally designed so that the screen resolution and the resolution of the Image Writer dot-matrix printers sold by Apple were easily scaled: 72 PPI for the screen and 144 DPI for the printers.
The program on the right contains La Te X code, which when compiled will produce a document that will look very similar to the document on the left.Thus, the scale and dimensions of the on-screen display in programs such as Mac Write and Mac Paint were easily translated to the printed output—if the paper were held up to the screen, the printed image would be the same size as the on screen image, but at twice the resolution.As the Image Writer was the only model of printer physically compatible with the Macintosh printer port, this created an effective closed system.Typically, the design goals of a WYSIWYG application may include the following: It is not usually possible to achieve all of these goals at once.The major problem to be overcome is that of varying output resolution.Prior to this, the standard measure of 72.27 points per inch was used in typeface design, graphic design, typesetting and printing.) Bravo was released commercially and the software eventually included in the Xerox Star can be seen as a direct descendant of it.
In parallel with but independent of the work at Xerox PARC, Hewlett Packard developed and released in late 1978 the first commercial WYSIWYG software application for producing overhead slides or what today are called presentation graphics.
Thus, while a Macintosh 15-inch (38 cm) monitor had the same 640 × 480 resolution as a PC, a 16-inch (41 cm) screen would be fixed at 832 × 624 rather than the 800 × 600 resolution used by PCs.
With the introduction of third-party dot-matrix printers as well as laser printers and multisync monitors, resolutions deviated from even multiples of the screen resolution, making true WYSIWYG harder to achieve.
When the text was laid out on the screen, 72 PPI font metric files were used, but when printed 300 PPI files were used—thus one would occasionally find characters and words slightly off, a problem that continues to this day.
(72 PPI came from a new measure of 72 "Post Script points" per inch.
Compilation of formatting code is not a WYSIWYG process.