The primary features of ChemoSoft's
Chemical Structure Editor are the following.

• You can easily edit/enter/browse a database structures while remaining in (or without
  quitting or closing) the Editor! This considerably increases the rate of structure editing or
  entering.

• The simultaneous use of the mouse and typing on the keyboard accelerates the edition and input of structural data.

Some useful commands are listed below.

File tab: Ctrl+n Create a new structure Ctrl+o Open an existing structure Ctrl+s 'Save' command Ctrl+p 'Print' command Alt+F4 Close STRED Edit tab: Ctrl+BkSpace Undo the last action Ctrl+c Copy Ctrl+v Paste Template tab: Ctrl+r Rings Ctrl+s Stereo rings Ctrl+c Condensed rings Ctrl+g Groups Ctrl+u User-defined template Draw tab: PgUp Normal drawing PgDn Rubber-bend End Compass Ctrl+Num Cycle (A number is the cycle size 0-9.) Home Chain drawing A Amino acid selection Atom tab: B,C,F,H,I,K,N, O,P,S,U,V,W,Y The corresponding atom D Deuterium L Chlorine R Bromine M An atom from the Periodic table Bond tab: 1 Single bond 2 Double bond 3 Triple bond 4 Stereo Up 5 Stereo Down 6 Stereo Either 7 Coordination bond Stereo tab: Shift+a Automatic stereo determination Shift+r Stereo atom R Shift+s Stereo atom S Shift+z Stereo bond Z Shift+e Stereo bond E Size tab: Ctrl+Up Bond enlargement Ctrl+Dn Bond diminution Delete tab: Del Atom Shift+Del Bond Ctrl+Del Group Shift+Ctrl+Del Fragment Attributes tab: Charge increment Charge decrement Shift+Num Valence (A number is 0 - 7.) Help tab: F1 Help on a current situation Ctrl+F1 Help contents

• Query atoms and bonds make substructural search more flexible and powerful.

You can invoke the Editor by double-clicking on the structure box while the 'Update' switch is on.