2.2.1 Graphic Formula Editor

The graphic formula editor can be used to create visually attractive formulae. It is recommend to use it when the focus is on appearance.

Data is entered on the left-hand side in natural mathematical notation. Data entry is controlled by several buttons on the right-hand side, respectively formula are extended. Using the Variable list all available variables can be displayed and inserted.

Graphic formulae can be used in the text without having to use the calculating functionality.

The user can choose between various display options:






Calculate - Graphic formula

Data Entry

A placeholder is preallocated on the left side  (small blue box). Variables and numerical values can be entered directly via the keyboard.

Entry of a term is concluded with ENTER or with an arithmetic operator. The "+", "-", "x" and "/" keys automatically create new terms. This supports faster data entry.

In addition, the key combinations CTRL+D for subscripts, CTRL+E for superscripts and CTRL+T for the square root function simplify the input.

IMPORTANT: After completing the entry of a term, the cursor keys can be used to navigate in the formula editor.

More complex formulae are created trouble-free with the buttons on the right. For very complex formulae, it is recommended to set up the basic structure first. Begin with the root function sign, for example, and the essential fraction strokes. Then fill in the placeholders. 

Greek characters and trigonometric functions are inserted using the lower selection buttons. Incorrect entries can be cancelled using the arrow buttons.

All defined variables can be adopted automatically using the Variable list (see illustration to the right).


The entry of a total corresponds with the mathematical rules.
Note: The index must be identical with the index of the variable.

Editing and extending formulae:

The graphic formula editor was designed to provide optimum operating comfort and fast entry of formulae. Elements and terms are selected by a mouse click.  Clicking on the associated operator selects a term.
Single terms can be copied or moved using the clipboard (CTRL + C or CTRL + V).
: Before calling up a function (e.g. bracket, root function, etc.), the term must be selected first.

Example 1:
You have already entered a2 + b2:
Now click on the "+" character:
The formula is marked. Now you can insert the root function
(with the right button or CTRL+T):

Example 2:
You have entered a + b + c:
Now click on the second "+" character:
Click on the first "+" character, a + b + c is marked:

2.2.2 Special Variables

Various subject-specific variables are either not included in Windows character sets or they contradict VCmaster’s rules of mathematical interpretation. 

Missing variables can be created as a bitmap without any design restrictions. Aliases are used for the mathematical interpretation. Please use names that are considerably different from common variable names! 

The variables are either stored on the PC or in the document. For files to be circulated a contained variable can be copied onto the PC by the Make generally available option. The options Import and Export transfer data between various PCs.

Add or Modify calls up the mask for modifying the variables. The height, width and baseline are shown in pixels. The latter defines the vertical position in the text.

Note: In the case of normal font sizes (9 to 12) the baseline interval is 6 pixels. The height and width result from the entered symbols. Guideline value for the height: 2 x font size + 6.

Data Entry
Entering data is carried out similar to the Editing images option. For deleting sections, use a white rectangle, for saving use the blue check mark. 




Insert-Special variables

2.2.3 Input via variable list

Writing formulae is a somewhat arduous task for index-related notations. VCmaster's Variable List provides effective assistance. It displays all variables available for further calculation at the current text passage. The variables can be selected and transferred into a new formula. Indices are also taken into account and do not have to be entered again. Brackets and arithmetic operators can be addressed directly. Another option is to write parts of the formula in the text and extend it by using the Variable List (or vice versa). 

A variable is selected per mouse click. It is transferred into the document with a further click on the left or right mouse key. Instead the Insert button can be used.

Arithmetic operators and brackets are created by using the relevant button. For switching to the VCmaster data entry, please use the middle button.  For exiting the variable list use the Exit button.

The Variable List can be extended gradually. Additionally the lower part displays the value of the variable. Has a text been entered prior to the variable, it is also displayed. Therefore the Variable List is well-suited for checking values.






Calculate-Variable list

Fast input mode

Image: Fast input mode for variables

While entering data a list of variables can be called up. This list is placed at cursor position. Results are refined after entering the first letter(s).

Simplifying and accelerating the input of variables, as specific variable names are not always present. Fast input mode also prevents unnecessary typing errors and associated corrections. Navigation in the variable list is carried out via cursor.

Variables are selected using either the Enter key or the Space bar.

2.2.4 Checking Inputs

Checking formulae and values of variables is important. The following functions are available for this: 

Checking the definition of a variable in Variable List

The definition point of the selected variables can be displayed in the Variable List (figure below). How many lines are to be displayed prior or thereafter can be set. Clicking on the arrow symbol (encircled) once more hides the review again.

Checking the variables of a formula if numerical values are displayed
If numerical values are displayed, hovering the cursor over the graphical formula shows the variables.

Checking the numerical values of a formula if the variables are displayed
Values and definition point can be checked by
using either the Toolbox or the context menu
(Display values of Variables).

2.2.5 Toolbox for Calculation Lines

The toolbox shown on the left is a convenient solution for editing and formatting calculation lines.

Alternative: Context menu for calculation lines.

The following functions are available:




Extras-Toolbox on/off