"I'd like to create a command-line speed reading application using Python that implements RSVP (Rapid Serial Visual Presentation) technique. The app should run on Ubuntu, display words sequentially at adjustable speeds, and include basic controls based on keyboard inputs. Could you provide a clean, well-structured implementation with proper error handling?"

class RSVPReader:
 def __init__(self, text, wpm=250, chunk_size=1):
 self.text = text
 self.wpm = wpm
 self.words = self._prepare_text()
 self.current_index = 0
 self.is_paused = False
 self.delay = 60.0 / (wpm * chunk_size)

"I'd like to enhance the visual presentation by centering the text display in the terminal window and increasing the font emphasis for better readability. Could you modify the code to utilize the terminal's center area more effectively while maintaining clean, professional output?"

def _get_terminal_size(self):
 """Get terminal dimensions for responsive layout"""
 try:
 import shutil
 cols, rows = shutil.get_terminal_size()
 return cols, rows
 except OSError:
 return 80, 24 # Sensible fallbacks

"I'd like to refine the interface design with these specific requirements: 1) Display text in the center 40% of the terminal screen, 2) Reduce default reading speed for better comprehension, 3) Create a static control interface that doesn't refresh, with only the reading text updating dynamically, 4) Maintain clean borders around the active display area. Could you implement these changes while preserving all existing functionality?"

def _get_display_area(self):
 """Get the 40% center rectangle dimensions"""
 cols, rows = self._get_terminal_size()

 display_width = int(cols * 0.4)
 display_height = int(rows * 0.4)

 start_col = (cols - display_width) // 2
 start_row = (rows - display_height) // 2

 return start_col, start_row, display_width, display_height

def _draw_static_interface(self):
 """Draw the static interface"""
 # Controls stay fixed, only words change

def _get_keyboard_input(self):
 """Non-blocking keyboard input handler"""
 old_settings = termios.tcgetattr(sys.stdin)
 try:
 tty.setraw(sys.stdin.fileno())
 while self.is_running:
 if select.select([sys.stdin], [], [], 0.1)[0]:
 # Handle real-time input without blocking

def _display_word(self, word):
 # Use ANSI escape codes for precise positioning
 print(f'\033[{word_row};{word_start_col}H{large_word}')

# Longer words get more display time
word_delay = self.delay
if len(current_word) > 8:
 word_delay *= 1.2
elif len(current_word) < 4:
 word_delay *= 0.8

$ chmod +x rsvp_reader.py

$ ./rsvp_reader.py sample.txt