.TL7th Edition UNIX \(em Summary.AUSeptember 6, 1978.AI.MH.SHA.  What's new: highlights of the 7th edition UNIX\(dg System.FS\(dg.UC UNIXis a Trademark of Bell Laboratories..FE.LP.B "Aimed at larger systems."Devices are addressable to 2\u\s-231\s+2\dbytes, files to 2\u\s-230\s+2\d bytes.128K memory (separate instruction and data space) is needed for some utilities..LP.B "Portability."Code of the operating system and most utilities hasbeen extensively revised to minimize itsdependence on particular hardware..LP.B "Fortran 77."F77 compiler for the new standard languageis compatible with C at the object level.A Fortran structurer, STRUCT, converts old, ugly Fortran into RATFOR,a structured dialect usable with F77..LP.B "Shell."Completely new SH program supports string variables,trap handling, structured programming, user profiles,settable search path,multilevel file name generation, etc..LP.B "Document preparation."TROFF phototypesetter utility is standard.NROFF (for terminals) is now highly compatiblewith TROFF.MS macro package provides canned commands formany common formatting and layout situations.TBL provides an easy to learn language for preparingcomplicated tabular material.REFER fills in bibliographic citationsfrom a data base..LP.B "UNIX-to-UNIX file copy."UUCP performs spooledfile transfers between any two machines..LP.B "Data processing."SED stream editor does multiple editing functionsin parallel on a data stream of indefinite length.AWK report generator does free-field pattern selectionand arithmetic operations..LP.B "Program development."MAKEcontrols re-creation of complicated software,arranging for minimal recompilation..LP.B "Debugging."ADB does postmortem and breakpoint debugging,handles separate instruction and data spaces,floating point, etc..LP.B "C language."The language now supportsdefinable data types, generalized initialization,block structure, long integers,unions,explicit type conversions.The LINT verifier does strong type checkingand detection of probable errors and portability problemseven across separately compiled functions..LP.B "Lexical analyzer generator."LEX converts specification of regular expressionsand semantic actions into a recognizing subroutine.Analogous to YACC..LP.B "Graphics."Simple graph-drawing utility, graphic subroutines, andgeneralized plotting filters adapted to various devicesare now standard..LP.B "Standard input-output package."Highly efficient buffered stream I/O isintegrated with formatted input and output..LP.B "Other."The operating system and utilities have been enhancedand freed of restrictions in manyother ways too numerous to relate..sp 100