diff --git a/kiauh/core/submodules/simple_config_parser/src/simple_config_parser/simple_config_parser.py b/kiauh/core/submodules/simple_config_parser/src/simple_config_parser/simple_config_parser.py
index b3f10c6..b2246bb 100644
--- a/kiauh/core/submodules/simple_config_parser/src/simple_config_parser/simple_config_parser.py
+++ b/kiauh/core/submodules/simple_config_parser/src/simple_config_parser/simple_config_parser.py
@@ -85,10 +85,46 @@ class DuplicateOptionError(Exception):
 class SimpleConfigParser:
     """A customized config parser targeted at handling Klipper style config files"""
 
-    _SECTION_RE = re.compile(r"\s*\[(\w+\s?.+)]\s*([#;].*)?$")
-    _OPTION_RE = re.compile(r"^\s*(\w+)\s*[:=]\s*([^=:].*)\s*([#;].*)?$")
-    _MLOPTION_RE = re.compile(r"^\s*(\w+)\s*[:=]\s*([#;].*)?$")
+    # definition of section line:
+    #  - then line MUST start with an opening square bracket - it is the first section marker
+    #  - the section marker MUST be followed by at least one character - it is the section name
+    #  - the section name MUST be followed by a closing square bracket - it is the second section marker
+    #  - the second section marker MAY be followed by any amount of whitespace characters
+    #  - the second section marker MAY be followed by a # or ; - it is the comment marker
+    #  - the inline comment MAY be of any length and character
+    _SECTION_RE = re.compile(r"\[(.+)]\s*([#;].*)?$")
+
+    # definition of option line:
+    #  - the line MUST start with a word - it is the option name
+    #  - the option name MUST be followed by a colon or an equal sign - it is the separator
+    #  - the separator MUST be followed by a value
+    #    - the separator MAY have any amount of leading or trailing whitespaces
+    #    - the separator MUST NOT be directly followed by a colon or equal sign
+    #  - the value MAY be of any length and character
+    #    - the value MAY contain any amount of trailing whitespaces
+    #    - the value MAY be followed by a # or ; - it is the comment marker
+    #  - the inline comment MAY be of any length and character
+    _OPTION_RE = re.compile(r"^([^:=\s]+)\s?[:=]\s*([^=:].*)\s*([#;].*)?$")
+
+    # definition of multiline option line:
+    #  - the line MUST start with a word - it is the option name
+    #  - the option name MUST be followed by a colon or an equal sign - it is the separator
+    #  - the separator MUST NOT be followed by a value
+    #    - the separator MAY have any amount of leading or trailing whitespaces
+    #    - the separator MUST NOT be directly followed by a colon or equal sign
+    #    - the separator MAY be followed by a # or ; - it is the comment marker
+    #  - the inline comment MAY be of any length and character
+    _MLOPTION_RE = re.compile(r"^([^:=\s]+)\s*[:=]\s*([#;].*)?$")
+
+    # definition of comment line:
+    #  - the line MAY start with any amount of whitespace characters
+    #  - the line MUST contain a # or ; - it is the comment marker
+    #  - the comment marker MAY be followed by any amount of whitespace characters
+    #  - the comment MAY be of any length and character
     _COMMENT_RE = re.compile(r"^\s*([#;].*)?$")
+
+    # definition of empty line:
+    #  - the line MUST contain only whitespace characters
     _EMPTY_LINE_RE = re.compile(r"^\s*$")
 
     BOOLEAN_STATES = {
diff --git a/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/data/case_parse_option.py b/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/data/case_parse_option.py
index fbe9001..df849be 100644
--- a/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/data/case_parse_option.py
+++ b/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/data/case_parse_option.py
@@ -21,4 +21,8 @@ testcases = [
         "serial",
         "/dev/serial/by-id/<your-mcu-id>",
     ),
+    ("parameter_temperature_(°C): 155", "parameter_temperature_(°C)", "155"),
+    ("parameter_humidity_(%_RH): 45", "parameter_humidity_(%_RH)", "45"),
+    ("parameter_spool_weight_(%): 10", "parameter_spool_weight_(%)", "10"),
+    ("path: /dev/shm/drying_box.json", "path", "/dev/shm/drying_box.json"),
 ]
diff --git a/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/test_line_parsing.py b/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/test_single_line_parsing.py
similarity index 99%
rename from kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/test_line_parsing.py
rename to kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/test_single_line_parsing.py
index 96366e3..fd2e4a1 100644
--- a/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/test_line_parsing.py
+++ b/kiauh/core/submodules/simple_config_parser/tests/features/line_parsing/test_single_line_parsing.py
@@ -14,7 +14,7 @@ def parser():
     return SimpleConfigParser()
 
 
-class TestLineParsing:
+class TestSingleLineParsing:
     @pytest.mark.parametrize("given, expected", [*case_parse_section])
     def test_parse_section(self, parser, given, expected):
         parser._parse_section(given)
diff --git a/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_multiline_option.py b/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_multiline_option.py
index ed93f87..ddf74d5 100644
--- a/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_multiline_option.py
+++ b/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_multiline_option.py
@@ -14,4 +14,14 @@ testcases = [
     ("", False),
     ("# that's a comment", False),
     ("; that's a comment", False),
+    ("parameter_humidity_(%_RH):", True),
+    ("parameter_spool_weight_(%):", True),
+    ("parameter_temperature_(°C):", True),
+    ("parameter_humidity_(%_RH): 18.123", False),
+    ("parameter_spool_weight_(%): 150", False),
+    ("parameter_temperature_(°C): 30,5", False),
+    ("trusted_clients:", True),
+    ("trusted_clients: 192.168.1.0/24", False),
+    ("cors_domains:", True),
+    ("cors_domains: http://*.lan", False),
 ]
diff --git a/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_option.py b/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_option.py
index 280e851..b33e6a8 100644
--- a/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_option.py
+++ b/kiauh/core/submodules/simple_config_parser/tests/features/line_type_detection/data/case_line_is_option.py
@@ -26,5 +26,6 @@ testcases = [
     ("description: homing!", True),
     ("description: inline macro :-)", True),
     ("path: %GCODES_DIR%", True),
+    ("path: /dev/shm/drying_box.json", True),
     ("serial = /dev/serial/by-id/<your-mcu-id>", True),
 ]