**Class names** start always with an upper case letter.
### Instance Names
**Instance names**, i.e., names of component instances and of variables (with the exception of constants), start usually with a lower case letter with only a few exceptions if this is common sense (such as `T` for a temperature variable).
### Constant Names
**Constant names**, i.e., names of variables declared with the `constant` prefix, start usually with a upper case letter with only a few exceptions if this is common sense e.g. `pi`, `cp`.
### Model, Block and Package Names
Names of models, blocks and packages should start with an upper-case letter and be a noun or a noun with a combination of adjectives and nouns. Use camel-case notation to combine multiple words, such as `HeatTransfer`.
### Ports
For model with multiple ports, an upper case letter is added, e.g. `portA`.
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