Browse Prior Art Database

File Input Protect for Half-Duplex Full-Screen Editors

IP.com Disclosure Number: IPCOM000118303D
Original Publication Date: 1996-Dec-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Breslau, FC: AUTHOR [+3]

Abstract

Disclosed is a mechanism for protecting text or graphics being edited from inadvertent change by the user during a full-screen half-duplex edit session.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 68% of the total text.

File Input Protect for Half-Duplex Full-Screen Editors

      Disclosed is a mechanism for protecting text or graphics being
edited from inadvertent change by the user during a full-screen
half-duplex edit session.

      The described mechanism is for protecting text or graphics
being edited from inadvertent change by the user during a full-screen
half-duplex edit session.

      In a full-screen editor (text or graphical, e.g., ESPF
(Extended System Productivity Facility) full-screen editor, or XEDIT
(Extended Editor)), a new attribute and a set of associated control
commands are defined.

      A new attribute (called PROT) is defined, which has two states
for the text or graphics it is associated with.  The states are
denoted as ON and OFF.  PROT OFF restricts the data associated with
it from being modified until PROT ON is set for the associated data.

      A set of associated commands is defined.  The PROT n m ON|OFF
editor command manipulates the state of the PROT attribute for the
line range n through m.  The corresponding line command PRN triggers
the associated line attribute to be PROT ON.  The corresponding
multi-line version of the PRN line command -- PRNN -- causes the
lines in the range  between two PRNN commands to change its PROT
attribute to ON. Similarly,  the PRF line command changes the single
line PROT attribute to OFF, and a  pair of PRFF line commands change
the PROT attribute for a range of lines  to OFF.

      When...