[From string (line 74) ]                                              
                                                                      
@startuml                                                             
|""zsh""|                                                             
|#LightSeaGreen|$RCS|                                                 
|#RoyalBlue|$GLOBAL_RCS|                                              
|""sh""/""ksh""|                                                      
...                                                                   
... ( skipping 49 lines )                                             
...                                                                   
  endif                                                               
  |""zsh""|                                                           
                                                                      
  :user session]                                                      
                                                                      
  if (<b><color:SeaGreen>""$RCS""</color></b>) then (set)             
    |$RCS|                                                            
                                                                      
    if(login?) then (yes)                                             
                                                                      
      :""$ZDOTDIR/.zlogout"";                                         
                                                                      
      if (<b><color:DodgerBlue>""$GLOBAL_RCS""</color></b>) then (set)
        |$GLOBAL_RCS|                                                 
        :""/etc/zlogout"";                                            
      else (unset)                                                    
      endif                                                           
    endif                                                             
                                                                      
  else (unset)                                                        
^^^^^                                                                 
 Cannot find if (Assumed diagram type: activity)