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This is a wiki to note a new way to think about symbol Concepts to be used in these SRS documents. This is to help with a number of current issues with capturing and rendering the knowledge. See #91 or #265 for example.

We create three groups to capture concepts.

Examples:

• Force
• Weight
• Length
• Number
• Probability
• Factor
• Time

Examples:

• Water
• Ball
• Tank
• Breakage
• Throw

This is for concepts that cannot fit in the other two categories. Examples:

• Coordinates such as x, y, (x,y,z), (i,j,k)
• (Arbitrary) Constants, functions, variables, or parameters such as y=mx + b, find x(t) where mx''=-kx
• Misc ? such as gradient operator ∇

Take a property and combine it with an object or event to create a UnitalChunk. Examples;

• Water weight
• Number of slices
• Probability of failure

Auxiliaries can become a UnitalChunk on their own.

These can be added to a UnitalChunk to create a new UnitalChunk. Examples;

• initial / final
• normal / shear
• angular
• difference (think change in temperature or Δx)
• ratio
• vector
• unit (as in unit vector)

We can take Temperature and combine it with Water and modify it with Final. Give temperature the symbol T. Then add the subscript W for water to get T_W. Then add a second subscript or superscript for final to get T^f_W.