| IAcroChoiceOption | 
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| IPdfAcroField | 
 A form field of a PDF AcroForm. 
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| IPdfAcroField.Button | 
 An AcroForm button that can be pressed. 
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| IPdfAcroField.Checkable | 
 A selectable option, either a check box or a radio button. 
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| IPdfAcroField.CheckBox | 
 An AcroForm form field with a checkbox that can be enabled or disabled. 
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| IPdfAcroField.Choice | 
 An AcroForm form field for selecting values from a list of options. 
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| IPdfAcroField.ComboBox | 
 An AcroForm form field for selecting a value from a list of options. 
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| IPdfAcroField.ListBox | 
 An AcroForm form field for selecting one or more values from a list of options. 
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| IPdfAcroField.RadioButton | 
 An AcroForm form field with a radio button that can be enabled or disabled. 
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| IPdfAcroField.Signature | 
 An AcroForm form field for entering a signature. 
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| IPdfAcroField.Text | 
 An AcroForm free-text form field for entering plain text. 
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| IPdfDocument | 
 Represents a PDF document with pages. 
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| IPdfFormVisitor<T> | 
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| IPdfImage | 
 Represents an image included in the PDF, which could e.g. 
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| IPdfLine | 
Represents a plain text line, cConsisting of multiple  words.  
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| IPdfPage | 
 A page of the the PDF. 
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| IPdfText | 
 Represents a piece of plain text in the image, used e.g. 
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| IPdfWord | 
Represents a plain text word, consising of multiple  IPdfText.  
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