.C.Y.H
INETEGER/CHARACTER STRING
.W.X
F$CVSI(bit-position,width,string)
Returns  a signed decimal value

F$CVUI(bit-position,width,string)
Returns  an  unsigned  value

F$INTEGER(string)
Returns the decimal  equivalent

F$STRING(integer)
integer converted to a string.

F$TYPE(symbol)
determines if number or symbol
.S.C.Y.H
CHARACTER STRING MANIPULATION
.W.X
F$LENGTH(string)
Returns the length of the string.

F$LOCATE(substring,string)
Returns the offset of the substring

F$EXTRACT(offset,length,string)
Returns a  substring of the string.
The first character in a string is 0.

F$ELEMENT(Elemnt_nmbr,delimiter,string)
extracts the desired element
.S.C.Y.H
TEXT FORMATTING
.W.X
F$FAO(control-string[,argument...])
Returns a formatted string from 
character strings, numbers, and
special directives

F$EDIT(String,edit_list)
returns an edited list

.S.C.Y.H
TIME LEXICAL FUNCTIONS
.W.X
F$CVTIME(time)

INPUT: dd-mmm-yyyy hh:mm:ss.cc
OUTPUT: yyyy-mm-dd hh:mm:ss.cc


F$TIME()

Returns the current date and time
   dd-mmm-yyyy hh:mm:ss.cc
.S.C.Y.H
DEVICE AND FILES:
.W.X
F$DIRECTORY()
Returns the current default directory
including brackets.

F$FILE_ATTRIBUTES(file-spec,item)
Returns  file attribute  information

F$SEARCH(file-spec [,stream])
Returns the next resultant name string
that matches the given file-spec.

F$PARSE(file-spec [,default-name 
[,related-name [,field]]])
Returns either the expanded file 
specification for  the file you
designate, or the particular 
specification field that you request.
Use to find if a file exists
.S.C.Y.H
DEVICE AND FILES:
.W.X
F$GETDVI(device-name,item)
Returns device information

F$TRNLNM(logical-name)
Returns the equivalence name string
of the given logical-name.

F$IDENTIFIER(identifier,translation)
Converts an alphanumeric UIC to its 
numeric equivalent (or reverse)
.S.C.Y.H
ENVIRONMENT
.W.X
F$GETJPI(pid,item)
Returns  process information.

F$GETSYI(item)
Returns system information

F$MODE()
"BATCH","INTERACTIVE",or "NETWORK"

F$PID(context)
Returns the next PID

F$ENVIRONMENT(item)
information about the DCL envirnmt.

F$PROCESS()
Returns current process name string.
.S.C.Y.H
ENVIRONMENT
.W.X
F$PRIVILEGE(priv-list)
Test for the ability to set a privilege

F$SETPRV(priv-list)
Set privileges and return string to
all resetting to original condition.

F$USER()
Returns the current UIC as a string

F$VERIFY([value])
Return and optionally set VERIFY

F$MESSAGE(status_code)
Returns the message text.
.s