***PLEASE READ*****

PLEASE PRINT ADDENDUM.WRI AND INSERT INTO MANUAL. MUCH
OF THE INFORMATION ABOUT EDITING, IN THE MANUAL, HAS
CHANGED!

Last minute information for ChemPen+ version 1.07

Special Considerations for Microsoft Windows 95 Users

ChemPen+ is a Windows 3.1 program but will install and
run under Windows 95. However:

1. ChemPen does not implement Windows 95 specific features
   such as long filenames or multithreading.

2. ChemPen does not edit the Windows 95 registry. ChemPen CHP
   files must be associated with ChemPen by the user.

3. At the end of installation, under Windows 95 there is a delay
   that can last up to a minute on slower machines and which
   causes the computer to appear locked. Wait for the installation
   to complete as indicated by the Installation successful
   message box.

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Changes from Version 1.00, 1.03, 1.05

1. The Atom Editor has charge buttons +1 and -1 that increase or 
   the selected atom's charge by +1 or -1.
2. The atom editor has +H and -H buttons that increment or decrement
   the number of implicit hydrogens by one. This is useful for 
   protonated structures or for proton NMR.
3. The main menu has been reduced to one level. However the number
   of functions has INCREASED.

4. Branch allows you to branch a bond, some non-metal atoms or
   popular functional groups from existing atoms.

5  Protonate and deprotonate let you branch explicit protons from 
   all atoms with implicit hydrogens. Non metals such as O, S and N
   have implicit hydrogens depending on the number and types of
   bonds attached.

6. When a bond is deleted any directly attached aromatic bonds are
   highlighted in blue. This is only significant if you are using
   Chempen  

New keyboard shortcuts:
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The following keys change the nearest atom to the mouse pointer
to the corresponding atom:

	H hydrogen	
	C carbon		
	O oxygen
	S sulfur		
	N nitrogen
	F fluorine	
	X chlorine
	Y bromine		
	I iodine
	Z selenium	
	Q silicon
	B boron

	Delete -  deletes the nearest atom

The bond nearest to the mouse pointer can be edited by the following keys

	1 - changes a bond to a single bond
	2 - changes bond to a double bond
	3 - changes bond to a triple bond
	4 - changes bond to a resonence double bond
	5 - changes bond to a dotted bond. 

	K 	deletes a bond

	L	links two atoms closest to mouse pointer. 

	A	Toggles bond between aromatic and non aromatic. This
		is only useful for the internal NMR and other property
		prediction routines. The Bond is highlighted in blue when
		toggled to aromatic. 

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Molecular weight on the "Special" menu item is now "Molecular
Data" on the "Calculate Menu" and gives the Molecular weight, the 
molecular formula and the % compositions of each element.

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C-13 NMR DEMO HOSE code Database:

The Demo database no longer uses HOSE CODES. A faster quantitative
proprietary property prediction algorithm has be implemented. This
algorithm, which encodes the connectivity and electronic structure
of the drawing is designed to deal with a wider variety of tasks
besides NMR prediction. At present the algorithm is implemented for
C-13, N-15 and F-19. A small demonstration C-13 NMR database is 
included. The old database will no longer work. 
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Bug fixes
1. Fixes problems with loss editor buttons under Windows 95
2. Fixes several memory leaks
3. Corrects functionality of ring tilting when fusing to 
   nitrogens and oxygens in rings
4. Corrects 213 error that occurs if you try to clone a group
   in a drawing that contains symbols.
5. Corrects errors in the reflect and flip behavior of arc arrows

---------------------------------------------------------------
Compuserve Members can Register ChemPen+ via the Shareware 
Registration Forum.  GO SWREG and enter Registration ID:   11961

-------------------------------------------------------------------
	Need help? Want to report a bug?
	Have suggestions or critiques?

	Please contact  Hilton Evans at:

	HFEvans@ICI.net
		or
	102303.2120@compuserve.com
		or
	232 Canton Street #312
	Randolph, MA 02368

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Chempen+ 
©1994,1995,1996 Hilton Evans