Edit detail for Jet Figure 4 revision 2 of 4

(1) -> )lib JBC JBFC JBC- JBFC- BFC BFC- JB JBX   JBLF  DE SEM  DIFF JBE CK

   )library cannot find the file JBC.
   )library cannot find the file JBFC.
   )library cannot find the file JBC-.
   )library cannot find the file JBFC-.
   )library cannot find the file BFC.
   )library cannot find the file BFC-.
   )library cannot find the file JB.
   )library cannot find the file JBX.
   )library cannot find the file JBLF.
   )library cannot find the file DE.
   )library cannot find the file SEM.
   )library cannot find the file JBE.
   )library cannot find the file CK.
   Difference is now explicitly exposed in frame initial 
   Difference will be automatically loaded when needed from 
      /var/aw/var/LatexWiki/DIFF.NRLIB/DIFF

jb:=JB(['x,'y,'z],['u]);

   There are no library operations named JB 
      Use HyperDoc Browse or issue
                                 )what op JB
      to learn if there is any operation containing " JB " in its name.

   Cannot find a definition or applicable library operation named JB 
      with argument type(s) 
                     List(OrderedVariableList([x,y,z]))
                              List(Variable(u))

      Perhaps you should use "@" to indicate the required return type, 
      or "$" to specify which version of the function you need.

eq1:jbl := D('u,['z,'z]) + 'y * D('u,['x,'x])

   jbl is not a valid type.

eq2:jbl := D('u,['y,'y])

   jbl is not a valid type.

printSys [eq1,eq2]

(1)

janet:de := generate [eq1,eq2]

  Line   1: janet:de := generate [eq1,eq2]
           ............A
  Error  A: syntax error at top level
  Error  A: Improper syntax.
   2 error(s) parsing

setOutMode(14)$ck

   ck is not a valid type.

)set output tex off
 

)set output algebra on

complete janet

   There are 5 exposed and 1 unexposed library operations named 
      complete having 1 argument(s) but none was determined to be 
      applicable. Use HyperDoc Browse, or issue
                            )display op complete
      to learn more about the available operations. Perhaps 
      package-calling the operation or using coercions on the arguments
      will allow you to apply the operation.

   Cannot find a definition or applicable library operation named 
      complete with argument type(s) 
                               Variable(janet)

      Perhaps you should use "@" to indicate the required return type, 
      or "$" to specify which version of the function you need.