# Internal functions

These functions may or may not be exported.
They are used internally.

- [`@default_counters`](@ref)
- [`@default_nlscounters`](@ref)
- [`@lencheck`](@ref)
- [`@rangecheck`](@ref)
- [`coo_prod!`](@ref)
- [`coo_sym_prod!`](@ref)
- [`decrement!`](@ref)
- [`DimensionError`](@ref)
- [`NLPModels.histline`](@ref)
- [`increment!`](@ref)
- [`NLPModels.lines_of_description`](@ref)
- [`NLPModels.lines_of_hist`](@ref)
- [`NLPModels.show_counters`](@ref)
- [`show_header`](@ref)
- [`NLPModels.sparsityline`](@ref)
