diff --git a/docs/api-reference.md b/docs/api-reference.md
index ea29cd6..b26ac3a 100644
--- a/docs/api-reference.md
+++ b/docs/api-reference.md
@@ -114,21 +114,64 @@ Single-value indicator graphs.
 
 - `field`: Main field configuration
 - `compare_field`: Optional comparison field
+- `progressbar`: Whether to display as a progress bar (boolean)
+- `show_percent`: Whether to display the percentage value (boolean)
+- `suffix`: Optional suffix to append to the value (e.g., '%', 'kW')
+- `color`: Conditional color expression
+- `icon`: Conditional icon expression
+- `total_domain`: Domain for calculating the total value
 
 #### Methods
 
-##### get_indicator_value(values, fields)
+##### process(value, total=0)
 
-Calculate the indicator value.
+Process indicator data and return formatted result.
+
+**Parameters:**
+- `value`: The indicator value
+- `total` (optional): The total value for percentage calculation
+
+**Returns:**
+- Dictionary containing:
+  - `value`: The indicator value
+  - `total`: The total value (if provided)
+  - `type`: Graph type ('indicator')
+  - `percent`: Calculated percentage (if progressbar or show_percent is True)
+  - `progressbar`: True if progressbar attribute is set
+  - `showPercent`: True if showPercent attribute is set
+  - `suffix`: Value suffix (if set)
+  - `color`: Evaluated color (if color condition is set)
+  - `icon`: Evaluated icon (if icon condition is set)
 
 **Example:**
 ```python
+# Basic indicator
 xml = '''
 <graph type="indicator" string="Total Sales">
     <field name="total" type="float" operator="sum"/>
 </graph>
 '''
 indicator = parse_graph(xml)
+
+# Indicator with progress bar
+xml = '''
+<graph type="indicator" string="Completion" progressbar="1">
+    <field name="completed" type="integer" operator="sum"/>
+</graph>
+'''
+indicator = parse_graph(xml)
+result = indicator.process(75, 100)
+# result: {'value': 75, 'total': 100, 'type': 'indicator', 'percent': 75.0, 'progressbar': True}
+
+# Indicator with percentage display
+xml = '''
+<graph type="indicator" string="Success Rate" showPercent="1" suffix="%">
+    <field name="success" type="integer" operator="sum"/>
+</graph>
+'''
+indicator = parse_graph(xml)
+result = indicator.process(85, 100)
+# result: {'value': 85, 'total': 100, 'type': 'indicator', 'percent': 85.0, 'suffix': '%', 'showPercent': True}
 ```
 
 ### GraphIndicatorField Class
diff --git a/docs/examples.md b/docs/examples.md
index f309347..a29e12a 100644
--- a/docs/examples.md
+++ b/docs/examples.md
@@ -122,6 +122,41 @@ kpi_result = kpi_graph.process(revenue_data, {'revenue': {'type': 'float'}})
 print(f"Total Revenue: {kpi_result}")
 ```
 
+### Indicator with Progress Bar
+
+```python
+# Indicator with progress bar showing completion percentage
+progress_xml = '''
+<graph type="indicator" string="Project Completion" progressbar="1">
+    <field name="completed_tasks" type="integer" operator="sum"/>
+</graph>
+'''
+
+progress_graph = parse_graph(progress_xml)
+
+# Process with value and total
+result = progress_graph.process(75, 100)
+print(f"Progress: {result}")
+# Output: {'value': 75, 'total': 100, 'type': 'indicator', 'percent': 75.0, 'progressbar': True}
+```
+
+### Indicator with Percentage Display
+
+```python
+# Indicator showing percentage without progress bar
+percent_xml = '''
+<graph type="indicator" string="Success Rate" showPercent="1" suffix="%">
+    <field name="successful" type="integer" operator="sum"/>
+</graph>
+'''
+
+percent_graph = parse_graph(percent_xml)
+
+result = percent_graph.process(85, 100)
+print(f"Success Rate: {result}")
+# Output: {'value': 85, 'total': 100, 'type': 'indicator', 'percent': 85.0, 'suffix': '%', 'showPercent': True}
+```
+
 ## Tree View Examples
 
 ### Basic Employee List
diff --git a/docs/usage.md b/docs/usage.md
index 93ea032..2ebaf99 100644
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -67,6 +67,8 @@ print(result)  # Processed graph data ready for visualization
 
 ### Indicator Graphs
 
+Indicators display single KPI values and support several display modes:
+
 ```python
 # Simple indicator
 indicator_xml = '''
@@ -74,10 +76,36 @@ indicator_xml = '''
     <field name="total_sales" type="float" operator="sum"/>
 </graph>
 '''
-
 indicator = parse_graph(indicator_xml)
+
+# Indicator with progress bar
+progress_xml = '''
+<graph type="indicator" string="Task Completion" progressbar="1">
+    <field name="completed" type="integer" operator="sum"/>
+</graph>
+'''
+progress_indicator = parse_graph(progress_xml)
+result = progress_indicator.process(75, 100)
+# result: {'value': 75, 'total': 100, 'percent': 75.0, 'progressbar': True}
+
+# Indicator with percentage display
+percent_xml = '''
+<graph type="indicator" string="Success Rate" showPercent="1" suffix="%">
+    <field name="success" type="integer" operator="sum"/>
+</graph>
+'''
+percent_indicator = parse_graph(percent_xml)
+result = percent_indicator.process(85, 100)
+# result: {'value': 85, 'total': 100, 'percent': 85.0, 'showPercent': True, 'suffix': '%'}
 ```
 
+**Indicator Attributes:**
+- `progressbar`: Display as a progress bar with percentage (set to "1" or "true")
+- `showPercent`: Display the percentage value as text (set to "1" or "true")
+- `suffix`: Add a suffix to the value (e.g., "%", "kW", "users")
+- `color`: Conditional color expression (e.g., "red:value<50;green:value>=50")
+- `icon`: Conditional icon expression
+
 ## Tree Views
 
 Tree views handle structured data displays with filtering capabilities.