### Example Interactive Program Startup Notice

Source: https://github.com/uclahs-cds/package-venndiagram/blob/main/LICENSE.md

This snippet illustrates a short notice that an interactive program should output when it starts in interactive mode, informing users about its copyright, lack of warranty, and redistribution conditions, with prompts for more details.

```Plain Text
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
```

--------------------------------

### Installing VennDiagram from GitHub using devtools (R)

Source: https://github.com/uclahs-cds/package-venndiagram/blob/main/README.md

This snippet illustrates how to install the latest development version of the VennDiagram package directly from its GitHub repository. It requires the 'devtools' package to be installed first, which is included as a commented prerequisite.

```R
# If `devtools` is not already installed, run:
# install.packages("devtools");

devtools::install_github('uclahs-cds/public-R-VennDiagram');
```

--------------------------------

### Applying GNU GPL License Header to Source Files

Source: https://github.com/uclahs-cds/package-venndiagram/blob/main/LICENSE.md

This snippet provides a template for the license notice that should be attached to the start of each source file of a program distributed under the GNU General Public License. It includes copyright information, redistribution terms, and a disclaimer of warranty, directing users to the full license text.

```Plain Text
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year>  <name of author>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY and FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
```

--------------------------------

### Installing VennDiagram from CRAN (R)

Source: https://github.com/uclahs-cds/package-venndiagram/blob/main/README.md

This snippet demonstrates how to install the latest public release of the VennDiagram package directly from CRAN, R's comprehensive archive network. This is the standard and recommended method for obtaining stable versions of the package.

```R
install.packages('VennDiagram');
```

--------------------------------

### Generating a Simple Two-Set Venn Diagram (R)

Source: https://github.com/uclahs-cds/package-venndiagram/blob/main/README.md

This R code demonstrates how to create a basic two-set Venn diagram using the VennDiagram package. It loads the package, defines two sample sets (A and B), generates the diagram data, and then draws it to the current graphics device using the 'grid' package, as indicated by `filename = NULL`.

```R
library(VennDiagram);
vd <- VennDiagram::venn.diagram(list(A = 1:150, B = 121:170), filename = NULL);
grid::grid.draw(vd);
```

--------------------------------

### Citing VennDiagram in BibTeX Format

Source: https://github.com/uclahs-cds/package-venndiagram/blob/main/README.md

This BibTeX entry provides the standard citation information for the VennDiagram R package, suitable for inclusion in LaTeX documents. It includes essential details such as the article title, journal, DOI, URL, volume, issue, publication year, and authors, facilitating proper academic attribution.

```BibTeX
@Article,{
    title = {VennDiagram: a package for the generation of highly-customizable Venn and Euler diagrams in R},
    journal = {BMC Bioinformatics},
    doi = {10.1186/1471-2105-12-35},
    url = {https://doi.org/10.1186/1471-2105-12-35},
    volume = {12},
    number = {35},
    year = {2011},
    month = {January},
    day = {26},
    issn = {1471-2105},
    author = {Hanbo Chen and Paul C Boutros}
  }
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.