Environment file syntax

Environment file entries have the following syntax:

parameter=value

All parameters must have a value. The following syntactic rules also apply:

All parameters are case sensitive.
A string value must be enclosed in a pair of double or single quotes.
Comments are preceded by a number sign (#). All characters following a number sign on a line are ignored. Number signs within a quoted string are part of the string, not the beginning of a comment.
Blank lines are ignored.
Lists must be enclosed in square brackets ([ ]). Individual items in the list are separated by commas. Entries take the form:
```
parameter=[value1, value2, value3]
```
Tuples must be enclosed in parentheses (( )). Individual items in the tuple are separated by commas. If the tuple is enclosed in parentheses and contains only one value, a comma has to follow the value. Entries take the form:
```
parameter=(value1, value2)
```
Embedded single quotes do not require special handling if they are placed within a double-quoted string. For example, "my value's" is translated as my value's. The same holds true for double quotes embedded in a single-quoted string. Quotes of the same type as the enclosing quotes can be embedded if they are prefixed by the backslash (\) character. Strings in a list or a tuple must be enclosed in quotes.
Triple-quoted (""") strings can span more than one line, and no special treatment of quotes within the string is necessary. Entries take the form:
```
parameter="""
multi-line
value
"""
```

Examples of many of the environment file parameters are available in the sample abaqusinc.env file found in the solvers_install_dir/os/SMA/site/ subdirectory of the Abaqus/CAE installation. Care should be taken when merging customized abaqus_v6.env settings from an earlier release into the current release. Settings from the earlier release may not be compatible with the new release.