Addenda for TECO Version 28



     The TECO manual in this kit describes TECO version 27;   the
TECO  in  the  kit is version 28.  TECO version 28 is totally up-
wards compatible with version 27 and has the following  new  fea-
tures:


Colon Modifiers for Xq and ^Uq Commands

     The two commands that load text strings into Q-registers (Xq
and  ^Uq)  may be preceded by a colon modifier.  This causes them
to append the text to the original contents  of  the  Q-register,
rather  than overwriting it.  For example, assume that Q-register
A contains the string

                               ABC

and the buffer contains the string

                               DEF

Then executing either the command

                              :HXA
                               or
                            :^UADEF$

will cause Q-register A to contain the string

                             ABCDEF


Character Group Search Modifier

     In a search string, the search modifier ^EGq matches any one
of  the  characters  contained  in Q-register q.  For example, if
Q-register A contains the string

                               JKL

then the search string

                             X^EGAY

will match any of the following strings:

                               XJY
                               XKY
                               XLY


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Use of EI$ in TECO.TEC (RSX-11 TECO only)

     If an EI$ command (to close the indirect  command  file)  is
executed during the processing of a user's TECO.TEC startup file,
the final MY$$ which causes processing of the command line is not
executed.   This results from the fact that the MY$$ normally ap-
pears in TECO's type in after all command files  have  been  pro-
cessed.   Executing the EI$ command causes all "type ahead" to be
discarded to allow a TECO command file to prompt and  read  input
from  the  terminal  (and not read extraneous type ahead).  It is
assumed that a TECO startup file  that  executes  EI$  and  reads
input  from  the  terminal will want to manage the rest of TECO's
startup.  If it still wants to process the command line, it  must
issue the MY itself.