  
  [1X11 [33X[0;0YThe Category Constructor[133X[101X
  
  
  [1X11.1 [33X[0;0YInfo class[133X[101X
  
  [1X11.1-1 InfoCategoryConstructor[101X
  
  [33X[1;0Y[29X[2XInfoCategoryConstructor[102X [32X info class[133X
  
  [33X[0;0YInfo class controlling the debugging output of [2XCategoryConstructor[102X ([14X11.2-1[114X).[133X
  
  
  [1X11.2 [33X[0;0YConstructors[133X[101X
  
  [1X11.2-1 CategoryConstructor[101X
  
  [33X[1;0Y[29X[2XCategoryConstructor[102X( [3Xoptions[103X ) [32X operation[133X
  [6XReturns:[106X  [33X[0;10Ya [5XCAP[105X category[133X
  
  [33X[0;0YCreates  a [5XCAP[105X category subject to the options given via [3Xoptions[103X, which is a
  record with the following keys:[133X
  
  [30X    [33X[0;6Y[10Xname[110X (optional): name of the category[133X
  
  [30X    [33X[0;6Y[10Xcategory_filter[110X   (optional):   filter   set   for  the  category  via
        [10XSetFilterObj[110X[133X
  
  [30X    [33X[0;6Y[10Xcategory_object_filter[110X      (optional):      filter      added     via
        [2XAddObjectRepresentation[102X ([14X2.6-3[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xcategory_morphism_filter[110X      (optional):     filter     added     via
        [2XAddMorphismRepresentation[102X ([14X3.6-3[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xcommutative_ring_of_linear_category[110X   (optional):   ring  attached  as
        [2XCommutativeRingOfLinearCategory[102X ([14X1.4-9[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xproperties[110X  (optional):  list  of  categorical properties the category
        will have, see [10XCAP_INTERNAL_CATEGORICAL_PROPERTIES_LIST[110X[133X
  
  [30X    [33X[0;6Y[10Xobject_constructor[110X  (optional):  function  added as an installation of
        [2XObjectConstructor[102X ([14X2.7-1[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xobject_datum[110X   (optional):   function  added  as  an  installation  of
        [2XObjectDatum[102X ([14X2.7-3[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xmorphism_constructor[110X  (optional): function added as an installation of
        [2XMorphismConstructor[102X ([14X3.2-1[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xmorphism_datum[110X  (optional):  function  added  as  an  installation  of
        [2XMorphismDatum[102X ([14X3.2-2[114X) to the category[133X
  
  [30X    [33X[0;6Y[10Xlist_of_operations_to_install[110X  (mandatory):  a  list  of  names of [5XCAP[105X
        operations which should be installed for the category[133X
  
  [30X    [33X[0;6Y[10Xsupports_empty_limits[110X  (optional): whether the category supports empty
        lists in inputs to operations of limits and colimits[133X
  
  [30X    [33X[0;6Y[10Xunderlying_category_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xunderlying_object_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xunderlying_morphism_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xtop_object_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xtop_morphism_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xgeneric_output_source_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xgeneric_output_range_getter_string[110X (optional): see below[133X
  
  [30X    [33X[0;6Y[10Xcreate_func_bool[110X: see below[133X
  
  [30X    [33X[0;6Y[10Xcreate_func_object[110X: see below[133X
  
  [30X    [33X[0;6Y[10Xcreate_func_object_or_fail[110X: see below[133X
  
  [30X    [33X[0;6Y[10Xcreate_func_morphism[110X: see below[133X
  
  [30X    [33X[0;6Y[10Xcreate_func_morphism_or_fail[110X: see below[133X
  
  [30X    [33X[0;6Y[10Xcreate_func_list_of_objects[110X: see below[133X
  
  [33X[0;0YThe  values  of the keys [10Xcreate_func_*[110X should be either the string [10X"default[110X"
  or  functions  which  accept the category and the name of a [5XCAP[105X operation of
  the   corresponding  [10Xreturn_type[110X.  Values  for  return  types  occuring  for
  operations  in  [10Xlist_of_operations_to_install[110X  are  mandatory. The functions
  must return strings, which (after some replacements described below) will be
  evaluated and added as an installation of the corresponding operation to the
  category.  The  value  [10X"default"[110X  chooses a suitable default string, see the
  implementation  for  details.  The following placeholders may be used in the
  strings and are replaced automatically:[133X
  
  [30X    [33X[0;6Y[10Xoperation_name[110X will be replaced by the name of the operation[133X
  
  [30X    [33X[0;6Y[10Xinput_arguments...[110X  will  be  replaced  by  the  [10Xinput_arguments_names[110X
        specified in the method name record (see [14X7.3[114X)[133X
  
  [30X    [33X[0;6Y[10Xunderlying_arguments...[110X:  If  the constructed category is created from
        another          category,          [10Xunderlying_category_getter_string[110X,
        [10Xunderlying_object_getter_string[110X, and [10Xunderlying_morphism_getter_string[110X
        may  be  strings  of functions computing the underlying category (when
        applied  to  the constructed category) and the underlying object resp.
        morphism (when applied to the constructed category and an object resp.
        morphism  in the constructed category). These functions are applied to
        [10Xinput_arguments[110X and [10Xunderlying_arguments[110X is replaced by the result.[133X
  
  [30X    [33X[0;6Y[10Xnumber_of_arguments[110X will be replaced by the number of input/underlying
        arguments[133X
  
  [30X    [33X[0;6Y[10Xtop_source[110X   and   [10Xtop_range[110X:  If  the  return  type  is  [10Xmorphism[110X  or
        [10Xmorphism_or_fail[110X,  source  and  range  are  computed  if  possible and
        [10Xtop_source[110X  and  [10Xtop_range[110X  are replaced by the results. For computing
        source     and     range,    the    [10Xoutput_source_getter_string[110X    and
        [10Xoutput_range_getter_string[110X  from  the  method  name record are used if
        available  (see  [14X7.3[114X). In some categories, source and range can always
        be  obtained  in a generic way (e.g. from the morphism datum). In this
        case,              [10Xgeneric_output_source_getter_string[110X             and
        [10Xgeneric_output_range_getter_string[110X  can  be  set  and  are used if the
        required information is not available in the method name record.[133X
  
  [30X    [33X[0;6Y[10Xtop_object_getter[110X  and  [10Xtop_morphism_getter[110X  are used in the [10X"default"[110X
        strings    and    are   replaced   by   [10Xtop_object_getter_string[110X   and
        [10Xtop_morphism_getter_string[110X, respectively.[133X
  
  [33X[0;0YNote  that  the  category  is created with [10Xcategory_as_first_argument[110X set to
  [10Xtrue[110X (see [14X7.3[114X).[133X
  
