ISODRAFT Reference Manual

Function:	Controls how arrowed messages on the isometric are positioned on the isometric.
Description:	The MESSAGEACCURACY RADIAL option determines the accuracy level of the radial search, based on the number of radial directions searched away from the arrowhead, the number of additional directions for kinked lines, and the length of increments of leader lines. The levels are as follows:

Level	Radial directions searched away from arrowhead	Additional directions for kinked lines	Length increments of leader line
1	18 directions @ 20 degrees	2 directions @ 80 degrees	4mm
2	36 directions @ 10 degrees	4 directions @ 40, 80 degrees	2mm
3	72 directions @ 5 degrees	8 directions @ 20, 40, 80 degrees	1mm

	Once all messages have been positioned, the MESSAGEACCURACY ITERATIONS option repositions any messages with crossing leader lines, and all messages with leader lines passing through the text block. The user can set a maximum number of iterations, and the process is repeated until one of the following conditions is satisfied:
	• No leader lines cross and no messages need to be moved. • The number of leader lines crossing and messages moving is the same as the previous iteration. • The maximum number of iterations set by the option is reached.
	The user should start with accuracy level 1. Higher accuracy levels are achieved at the expense of performance. Increasing the number of iterations is not as expensive as higher accuracy levels, as often an equilibrium is reached before the maximum number of iterations. Thus it is recommended that the effect of increasing iterations be examined before increasing the accuracy level.
Examples:	MESSAGEACC RADIAL 2 Sets the accuracy level to 2, as shown in the above table. MESSAGEACC ITERATIONS 4 Sets the maximum number of iterations to 4. MESSAGEACC DEFAULT Sets the default conditions of level 1 accuracy and 1 iteration.
Command Syntax:	>--- MESSAGEACCuracy ---+--- RADial --- level -----.                         |                          |                         |--- ITerations value -----|                         |                          |                         ‘--- DEFault --------------+--->
Querying:	Q MESSAGEACCuracy