1. Unpack source codes of the library, for example, to C:\EControl 

There will be directories: 

C:\EControl\EControl_Common 

C:\EControl\EControl_SyntEdit 

2. Add paths to Delphi library path (Tools | Environment options) 

C:\EControl\EControl_Common\Sources 

C:\EControl\EControl_SyntEdit\Sources 

3. Compile & Install .\EControl_Common\Packages\ecComnXX.dpk 

4. Compile .\EControl_SyntEdit\Packages\SyntEditXX.dpk 

5. Compile & Install .\EControl_SyntEdit\Packages\SyntEditDclXX.dpk 

6. Compile & Install .\EControl_SyntEdit\Packages\SyntEditDBXX.dpk