The PHOCUS input concept is furthermore characterized by permanently 
available integrated learning aids like tutorials and help functions. The 
tutorials in particular enable the PHOCUS novice to directly request in- 
formation on the purpose and execution of an application task. The help 
functions provide 
- a survey of the existing and currently available functions and 
parameters of an application program, and 
- detailed information on the purpose, range and syntax of each 
command. 
The help functions can be called both in the command mode and in the 
dialog mode. Fig. 6 shows an example. 
  
INOR» ? (call of HELP information in "interior orientation") 
  
FIDUCIALS NF  : PARAMETER to set the number of fiducials 
TYP TY  : PARAMETER to specify the type of transformation 
SETTINGS NS  : PARAMETER to specify the number of settings 
REJECT RE * : FUNCTION to reject this fiducial 
CALCULATE CC * : FUNCTION to calculate the interior orientation 
SET SE * : FUNCTION to set parameters 
  
  
INOR> SE (set parameter in INOR) 
CARRIER CA = >BOTH 
FIDUCIALS NF = >4 
TYP TY = >1 
SETTINGS NS = >/H (call of HELP information for NS) 
Usage : NS = par 
par : Number of settings for each fiducial 
Purpose : If NS = 2 , then the programm expects two settings of 
each fiducial. ; 
  
SETTINGS NS = >1 
TORES TO = >0.010 
CAMERA CM = >/E (to terminate the dialogue) 
INOR> 
  
  
  
Fig. 6: PHOCUS Help Functions (Example) 
An important component of the PHOCUS system are ready-made training 
projects, i.e. installed work environments for both the operator and the 
project manager (menus, system files) for different applications: 
142