The printOptions table is an optional field of the solver options table that is supplied as a parameter to the FEM process functions. It can instruct the solver to print all of its internal matrices and is usefull when debugging new physics implementations or to fully understand a FEM process behavior. The supported flags are:

Attribute	Description	Type	Required	Def. Value
elementMatrices	When set to true, all element local matrices will be printed.	Boolean	No	false
elementVectors	When set to true, all element local vectors will be printed.	Boolean	No	false
elementDofMapping	When set to true, the element DOF mapping between local and global matrix columns will be printed.	Boolean	No	false
assembledMatrix	When set to true, the global equivalent matrix created by the assembler from local matrices will be printed. If the assembler does not automatically merges global matrices into an equivalent matrix, the `K` matrix will be printed.	Boolean	No	false
assembledVector	When set to true, the global equivalent vector created by the assembler from local vectors will be printed. If the assembler does not automatically merges global vectors into an equivalent vector, the `Fe` vector will be printed.	Boolean	No	false
globalMatrices	When set to true, all global matrices, each corresponding to one of the local element matrices, will be printed. If the assembler automatically merges global matrices into an equivalent one (the default setting), a set of additional global matrices will be created for printing purposes only.	Boolean	No	false
globalVectors	When set to true, all global vectors, each corresponding to one of the local element vectors, will be printed. If the assembler automatically merges global vectors into an equivalent one (the default setting), a set of additional global vectors will be created for printing purposes only.	Boolean	No	false
linearSystemMatrix	When set to true, the final equivalent matrix \(K\) for the linear system \(Kx = f\) will be printed. This is the matrix used to solve the system and already treats fixed dofs.	Boolean	No	false
linearSystemVector	When set to true, the final equivalent vector \(f\) for the linear system \(Kx = f\) will be printed. This is the vector used to solve the system and already treats fixed dofs.	Boolean	No	false
linearSystemResult	When set to true, the global degrees of freedom vector ( \(x\)) will be printed after the \(Kx = f\) linear system has been solved.	Boolean	No	false
format	This field controls how values will be formatted when printed. It uses a subset of the C `printf()` syntax, allowing the user to specify the field width, precision and format type. A `format = "8.2f"` statement means that the formatted value will have at least 8 characters and 2 decimal values. Allowed format specifiers are 'f' (for decimal floating point format), 'e' (for scientific notation format) and 'g' (corresponding to 'f' or 'e', whichever is shortest).	String	No	'7.2f'