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+!!!Work in progress!!!
+
+What parameters have an influence to [G28] (Homing),
+the real possition of the nozzle,
+the displayed
+and reported position?
+
+At least there are:
+Configuration:
+* endstop pullups
+* z-probe pullup
+* endstop inverting
+* z-probe inverting
+* DISABLE_MAX_ENDSTOPS
+* DISABLE_MIN_ENDSTOPS
+* DISABLE_Z_MIN_PROBE_ENDSTOP
+* X_HOME_DIR
+* Y_HOME_DIR
+* Z_HOME_DIR
+* min_software_endstops
+* max_software_endstops
+* X_MIN_POS
+* Y_MIN_POS
+* Z_MIN_POS
+* X_MAX_POS
+* Y_MAX_POS
+* Z_MAX_POS
+* Z_MIN_PROBE_ENDSTOP
+* MANUAL_HOME_POSITIONS
+* BED_CENTER_AT_0_0
+* MANUAL_X_HOME_POS
+* MANUAL_Y_HOME_POS
+* MANUAL_Z_HOME_POS
+* Z_SAFE_HOMING
+* Z_RAISE_BEFORE_HOMING
+* QUICK_HOME
+* HOME_Y_BEFORE_X
+* X_HOME_BUMP_MM
+* Y_HOME_BUMP_MM
+* Z_HOME_BUMP_MM
+* HOMING_FEEDRATE
+* HOMING_BUMP_DIVISOR
+* ...
+
+* COREXY
+* COREXZ
+* DELTA
+* SCARA
+* ...
+
+EEPROM:
+* G92
+* M204
+* M205
+* M666
+* M851
+* ...
+
+Previously send g-codes:
+* G92
+* M204
+* M205
+* M666
+* M851
+* ...
+
+