If the position and/or dimensions of object symbols are determined by positioning and dimensioning attributes, they have the following effect:
If a positioning and a dimensioning attribute were specified each for an object symbol, its borders, that is, position and dimensions, are determined by these attributes.
If a positioning attribute but no dimensioning attribute was specified for an object symbol, its horizontal position is determined in that the center of the object symbol lies on the specified value of the positioning attribute. If the object is moved, the attribute value is automatically adjusted according to the new position. The object can have any dimensions, since no dimensioning attribute is specified.
If only a dimensioning attribute was specified for an object symbol, its horizontal extension is determined by the value of the dimensioning attribute. The object symbol can have any position, since no positioning attribute is specified.
If neither a positioning nor a dimensioning attribute were specified for an object symbol, its position and dimensions are independent of its attributes.